U S E R ’ S M A N U A L
4 C H A N N E L
F O R M - C
P O W E R R E L A Y
M - M O D U L E
M O D E L
M 2 2 2
( F O R M E R L Y
H P E 2 2 7 4 A )
Document Part No: 11029574
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AMENDMENT NOTICE
C&H Technologies, Inc. makes every attempt to provide up-to-date manuals with the associated
equipment. Occasionally, changes are made to the equipment wherein it is necessary to provide
amendments to the manual. If any amendments are provided for this manual they are printed on
colored paper and will be provided with the module and manual. Manual updates may also be
NOTE
The contents of any amendment may affect operation, maintenance,
or calibration of the equipment.
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INTRODUCTION
This manual describes the operation and use of the C&H Model M222 4 Channel Form C Power
Relay M-Module (Part Number 11029570). This module was formerly manufactured by HP
(Agilent) as Model E2274A. C&H obtained the manufacturing rights from Agilent and now
manufacturers it as C&H Model M222. This mezzanine module is designed to interface within
any M/MA-Module carrier adhering to the ANSI/VITA 12-1996 M-Module specification. These
carriers are available in many formats such as Ethernet, VME, VXI, PXI, cPCI, and the PC.
Contained within this manual are the physical and electrical specifications, installation and startup
procedures, functional description, and configuration and programming guidelines to adequately
use the product.
This manual is based on a low level register access, and is written in such a manner to provide
understanding to the user based on this type of access. If a driver is provided, please refer to the
driver documentation for instruction using the higher level interface provided by the driver.
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TABLE OF CONTENTS
1.0 GENERAL DESCRIPTION................................................................................................ 1
1.1 PURPOSE OF EQUIPMENT ................................................................................... 1
1.2 SPECIFICATIONS OF EQUIPMENT...................................................................... 1
1.2.1 Key Features ............................................................................................ 1
1.2.2 Specifications........................................................................................... 2
1.2.3 Mechanical............................................................................................... 3
1.2.4 Bus Compliance ....................................................................................... 3
1.2.5 Applicable Documents.............................................................................. 3
2.0 INSTALLATION................................................................................................................ 5
2.1 UNPACKING AND INSPECTION .......................................................................... 5
2.2 HANDLING PRECAUTIONS.................................................................................. 5
2.3 INSTALLATION OF M/MA MODULES................................................................. 5
2.4 PREPARATION FOR RESHIPMENT...................................................................... 6
3.0 FUNCTIONAL DESCRIPTION ......................................................................................... 7
3.1 OVERVIEW............................................................................................................. 7
3.1.1 M-Module Interface ................................................................................. 7
3.1.2 ID EEPROM............................................................................................ 7
3.2 IDENTIFICATION AND CONFIGURATION REGISTERS ................................... 8
3.2.1 I/O Registers............................................................................................ 8
3.2.2 Module Identification............................................................................. 10
4.0 OPERATION.................................................................................................................... 11
4.1 RELAY OPEN/CLOSE........................................................................................... 11
4.2 INTERRUPTS ........................................................................................................ 11
APPENDIX A: CONNECTORS ............................................................................................ A-1
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LIST OF FIGURES
Figure 1. M-MODULE Installation ............................................................................................5
Figure 2. Switching Schematic ...................................................................................................7
Figure 3. I/O Registers...............................................................................................................9
Figure 4. Effects of Opening/Closing Relay..............................................................................11
Figure A-1. Front Panel I/O Signals.........................................................................................A-1
LIST OF TABLES
Table I. Specifications................................................................................................................2
Table II. I/O Address Map/Command Summary.........................................................................8
Table III. M/MA Module PROM IDENT Words......................................................................10
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1.0 GENERAL DESCRIPTION
The M222 provides 4 individual Form C (SPDT) channels for general purpose switching and
control of external devices on a single wide M-Module adhering to the ANSI/VITA 12-1996
specification for M-Modules. With its 5 ADC per channel current rating, it can be used to switch
external power supplies. The module may be installed on any carrier board supporting the M-
Module specification. Carriers are available that allow the module to be used in Ethernet (LXI),
VXI, VME, PCI, cPCI, PXI and other system architectures.
1.1 PURPOSE OF EQUIPMENT
The M222 can connect multiple instruments to multiple points in your test system. This provides
flexible interconnection between test points, instrumentation, factory automation, and test
fixtures.
CAUTION: This module DOES NOT have provisions for on-board current
limiting components (if input current can exceed 5A DC or 5A
AC, you must install external current limiting circuitry)
1.2 SPECIFICATIONS OF EQUIPMENT
1.2.1 Key Features
Four (4) Individual Form C (SPDT) Power Relays
Non-latching Relays
Single-wide M module provides high density and maximum flexibility of configuration
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1.2.2 Specifications
The M222 incorporates the standard 40-pin, 20x2 row connector interfaces to the carrier board
for power and data/control, but does not have the 24-pin optional connector for carrying user-
connections back onto the carrier board.
The user input/output is provided through a standard 44-pin D-subminiature female receptacle. A
mating connector kit can be ordered separately as AM111 (C&H Part Number 11029700-0001).
CONEC part number 302A10889X (or equivalent) is used on the assembly. The connector pin-
outs are shown in Appendix A.
Table I. Specifications
MAXIMUM RATINGS
Parameter
Condition
Rating
Units
Voltage
Clean room Environment
(any terminal to any other terminal)
125
141
200
60
VDC
VAC rms
VAC peak
VDC
Non-Clean room Environment
(any terminal to any other terminal)
43
68
5
3.53
5
VAC rms
VAC peak
A
A rms
A peak
Current (non-inductive)
Power
Per Switch, DC
Per Switch, AC
Per Switch, AC
Per Switch, DC
Per Switch, AC
Per Module, DC
Per Module, AC
100
100
300
300
W
VA
W
VA
Thermal Offset
< 20
µV typ
RESISTANCE
Parameter
Condition
Rating
Units
Closed Channel
Insulation
End of Life
< 2
Between any two points
≤40°C, ≤65% relative humidity
≤25°C, ≤40% relative humidity
108
108
typ
typ.
RELAYS
Parameter
Relay Life
Condition
No load
Rated load
register programming
Rating
Units
5 x 107
3.5 x 104
16
operations
operations
ms
Time to open/close
AC
Parameter
Condition
Rating
Units
Bandwidth
Channel-to-Channel Crosstalk
-3dB
<100KHz
<1MHz
<10MHz
Channel-to-Channel
Channel-to-Common
10
MHz typ
dB
dB
dB
pF typ
pFtyp
<-80
<-60
<-40
25
Closed Channel Capacitance
60
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1.2.3 Mechanical
The mechanical dimensions of the module are in conformance with ANSI/VITA 12-1996 for
single-wide M-Module modules. The nominal dimensions are 5.687” (144.5 mm) long 2.082”
(52.9 mm) wide.
1.2.4 Bus Compliance
The module complies with the ANSI/VITA 12-1996 Specification for single-wide M-Modules
and the MA-Module trigger signal extension. The module also supports the optional IDENT and
VXI-IDENT functions.
Module Type:
Addressing:
Data:
M-Module
A08
D16
Interrupts:
DMA:
Triggers:
Identification:
Manufacturer ID:
Model Number:
supported
not supported
not supported
IDENT
0FFF16 (See note below)
068A16
VXI Model Number: 025F16
Note: C&H obtained the manufacturing rights from Hewlett Packard (Agilent) for this module. The
ID’s have been retained as Hewlett Packard to provide compatibility with existing SW drivers.
1.2.5 Applicable Documents
ANSI/VITA 12-1996 Standard for The Mezzanine Concept M-Module Specification, Approved
May 20, 1997, American National Standards Institute and VMEbus International Trade
Association, 7825 E. Gelding Dr. Suite 104, Scottsdale, AZ 85260-3415, http://www.vita.com
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2.0 INSTALLATION
2.1 UNPACKING AND INSPECTION
Verify that there has been no damage to the shipping container. If damage exists then the
container should be retained, as it will provide evidence of carrier caused problems. Such
problems should be reported to the shipping courier immediately, as well as to C&H. If there is
no damage to the shipping container, carefully remove the module from its box and anti static bag
and inspect for any signs of physical damage. If damage exists, report immediately to C&H.
2.2 HANDLING PRECAUTIONS
The module contains components that are sensitive to electrostatic discharge. When handling the
module for any reason, do so at a static-controlled workstation, whenever possible. At a
minimum, avoid work areas that are potential static sources, such as carpeted areas. Avoid
unnecessary contact with the components on the module.
2.3 INSTALLATION OF M/MA MODULES
All M-Modules must be installed into the carrier before the carrier is installed into the host
system. To install a module, firmly press the connector on the M/MA-Module together with the
shield using the original screws.
CAUTION: M/MA-Module connectors are NOT keyed. Use extra caution
to avoid misalignment. Applying power to a misaligned
module can damage the M/MA-Module and carrier.
M/MA-Module
Row not used
A
B
Carrier
Figure 1. M-MODULE Installation
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2.4 PREPARATION FOR RESHIPMENT
If the module is to be shipped separately it should be enclosed in a suitable water and vapor proof
anti-static bag. Heat seal or tape the bag to insure a moisture-proof closure. When sealing the
bag, keep trapped air volume to a minimum. The shipping container should be a rigid box of
sufficient size and strength to protect the equipment from damage. If the module was received
separately from a C&H system, then the original module shipping container and packing material
may be re-used if it is still in good condition.
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3.0 FUNCTIONAL DESCRIPTION
3.1 OVERVIEW
A simplified switching schematic is shown in Figure 2.
NC = Normally Closed
No Connection: Pin 7, 19, 26
CGND: Pin 14, 15, 30, 37, 44
NO = Normally Open
com = Common
Figure 2. Switching Schematic
3.1.1 M-Module Interface
An M-Module interface allows communication between the M222 and the carrier module. The
interface is an asynchronous 16-bit data bus with interrupt capabilities. The interface adheres to
the ANSI/VITA 12-1996 Standard for The Mezzanine Concept M-Module Specification for MA
modules.
3.1.2 ID EEPROM
An EEPROM holds sixty-four 16-bit words of M-Module ID data and VXI M-Module data.
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3.2 IDENTIFICATION AND CONFIGURATION REGISTERS
3.2.1 I/O Registers
There are a variety of registers used to configure and control the M222 module. These registers
Table II. I/O Address Map/Command Summary
Offset
(hex)
00
02
04
06 – 12
14
Register Name
Status Register
Control Register
Interrupt
Reserved
Relay
Register Type
Read Only
Read/Write
Read Only
NA
Read/Write
NA
Read/Write
16 – FC
FE
Reserved
ID EEPROM
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Reg. 00
Bit 15
Status
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Write
Read
Read-only
Not Used
BUSY
Not Used
RIRQ
BUSY Relay Busy 1 (0 = relay is busy, not stable yet (busy for 16mS after Relay Register is written))
RIRQ Relay Interrupt 2 (1 = interrupt pending)
Notes:
1. This BUSY bit is re-triggerable.
2. Reading this register does not clear a pending interrupt (RIRQ).
Reg. 02
Control
Bit 15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Write
Read
Not Used
REN SRST
Not Used
REN SRST
REN Enable Relay Interrupt (1 = enables relay interrupt (after BUSY timer))
SRST Soft Reset (1 = initiates a soft reset)
Reg. 04
Interrupt
Bit 15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Write
Read
Not Used
Not Used
RIRQ
RIRQ Relay Interrupt (1 = interrupt pending)
Note: Reading this register clears a pending interrupt.
Reg. 14
Relay
Bit 15
Write
Read
14
13
12
11
10
Not Used
Not Used
9
8
7
6
5
4
3
2
1
0
CH3
CH2
CH1
CH0
CH3
CH2
CH1
CH0
CH0 – CH3 Channel (1 = channel open (COM-NC), 0 = channel closed (COM-NO))
Reg.
FE
Bit
Write
Read
ID EEPROM
15
1
14
1
13
1
12
1
11
1
10
1
9
Unused
1
8
7
6
5
0
4
0
3
0
2
CS
0
1
CLK
0
0
I/O
I/O
1
0
0
I/O Data In/Out (value from the Data Out pin of the ID EEPROM)
CLK Clock (1 = forces the SK pin of the ID EEPROM high, 0 = low)
CS Chip Select (1 = selects the ID EEPROM, 0 = deselects the ID EEPROM)
Notes:
1. The ID EEPROM register allows you to access the contents of the ID EEPROM which contains
sixty-four 16-bit works of M-Module ID and VXI M-Module data.
2. CAUTION: Do not attempt to write to Bit00 of the ID EEPROM register. You could overwrite the
contents of the EEPROM.
Figure 3. I/O Registers
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3.2.2 Module Identification
The M222 supports the identification function called IDENT. This IDENT function provides
information about the module and is stored in a sixteen-word deep (32 byte) serial PROM.
Access is accomplished with read/write operations on the last address in IOSpace (hex FE) and
the data is read one bit at a time. The PROM is compatible with a standard IC 9603 type PROM.
For specific timing information refer to the 9603 or compatible PROM data sheet. Data should
not be written to the PROM.
The module also supports the VXI-IDENT function. This function is not part of the approved
ANSI/VITA 12-1996 standard. This extension to the M-module IDENT function increases the
size of the PROM to 64 words and includes VXI compatible ID and Device Type Registers.
Table III. M/MA Module PROM IDENT Words
Word
0
Description
Sync Code
Value (hex)
5346
1
2
3
4-7
8-15
16
17
18
Module Number
Revision Number 1
Module Characteristics 2
Reserved
068A
0002
1868
0000
0000
ACBA
0FFF 3
F25F
0000
0000
M-Module Specific
VXI Sync Code
VXI ID
VXI Device Type 3
Reserved
19-31
32-63
M-Module Specific
Notes:
1) A Revision Number greater than 1 indicates that the module was manufactured by C&H Technologies.
2) The Module Characteristics bit definitions are:
Bit(s)
15
14/13
12
Description
0 = no burst access
unused
0 = needs 12V
1 = needs +5V
11
10
9
0 = no trigger outputs
0 = no trigger inputs
00 = no DMA requestor
11 = interrupt type
01 = 16-bit data
00 = 8-bit address
0 = no memory access
8/7
6/5
4/3
2/1
0
3) The VXI ID of 0xFFF is the identification value for Hewlett-Packard. C&H has left the ID equal to
this value to allow operation with existing E2274A software drivers. The revision number (see note 1)
can be used to identify the module as manufactured by C&H.
4) The VXI Device Type word contains the following information:
Bit(s)
15-12
11-0
Description
F16 = 256 bytes of required memory
25F16 = C&H specified VXI model code for M222
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4.0 OPERATION
The M222 is a register-based instrument that is controlled through a series of I/O registers
dependent on the M-Module carrier used to interface the module to your data acquisition or test
system. Refer to the carrier’s documentation for information on the address mapping of an M-
Module’s I/O registers and to your system software documentation for details on data access.
Typically a high level driver is available to aid in control of the module. Refer to the software
driver documentation for instructions on using the driver.
4.1 RELAY OPEN/CLOSE
Each relay channel can be separately controlled with the Relay Register (Reg. 0x14). Writing a 1
to a bit will OPEN the relay (i.e., connect the common terminal to the normally closed terminal)
and writing a 0 to a bit will CLOSE the relay (i.e., connect the common terminal to the normally
open terminal) as shown in Figure 4.
Figure 4. Effects of Opening/Closing Relay
4.2 INTERRUPTS
The M222 can generate an interrupt request 16ms after a relay is opened or closed indicating that
the relay has settled. The interrupt must be enabled in the Control Register (Reg. 0x02).
M-module carriers and system controllers treat the interrupts differently. Refer to your carrier
and controller documentation to determine how to properly configure them to handle the M-
module interrupt request.
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APPENDIX A: CONNECTORS
MAXIMUM VOLTAGE/CURRENT: The maximum
voltage that may be applied to any connector on the M222 is
125 VDC, 141 VAC rms, or 200 VAC peak. These limits
apply only if the product is installed in a humidity-controlled
(<60% RH) environment where airborne contaminants and
transients are controlled, and there is NOT a relay
connection made to power mains. If these conditions
CANNOT be maintained, then the maximum voltage is 60
VDC, 43 VAC rms or 68 VAC peak.
The maximum current (non-inductive) that may be applied to
the M222 is:
Per Switch: 5 ADC, 5 AAC peak, 100W DC, 100VA AC
Per Module: 300W DC, 300VA AC
Pin # Use
Pin # Use
Pin# Use
1
2
3
4
5
6
7
8
9
CH0_NC
16 CH0_NC
17 CH0_COM
18 CH0_NO
19 NC
20 CH1_NC
21 CH1_COM
22 CH1_NO
23 CH2_NC
24 CH2_COM
25 CH2_NO
26 NC
31 CH0_NC
32 CH0_COM
33 CH0_NO
34 CH1_NC
35 CH1_COM
36 CH1_NO
37 CHGND
38 CH2_NC
39 CH2_COM
40 CH2_NO
41 CH3_NC
42 CH3_COM
43 CH3_NO
44 CHGND
CH0_COM
CH0_NO
CH1_NC
CH1_COM
CH1_NO
NC
CH2_NC
CH2_COM
10 CH2_NO
11 CH3_NC
12 CH3_COM
13 CH3_NO
14 CHGND
15 CHGND
27 CH3_NC
28 CH3_COM
29 CH3_NO
30 CHGND
NC = No Connection
Figure A-1. Front Panel I/O Signals
A-1
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A-2
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N O T E S:
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.
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READER'S COMMENT FORM
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part of the inputs used for revision.
C&H Technologies, Inc. may use and distribute any of the information that you supply in any way
that it believes to be appropriate without incurring any obligation whatsoever. You may, of
course, continue to use the information, which you supply.
Please refrain from using this form for technical questions or for requests for additional
publications; this will only delay the response. Instead, please direct your technical questions to
your authorized C&H representative.
COMMENTS:
Thank you for helping C&H to deliver the best possible product. Your support is appreciated.
Sincerely,
F. R. Harrison
President and CEO
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