Acromag IP400 Series User manual

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Series IP400 Industrial I/O Pack
40-Channel Digital Input Board
USER’S MANUAL
ACROMAG INCORPORATED
30765 South Wixom Road
P.O. BOX 437
Wixom, MI 48393-7037 U.S.A.
Tel: [phone]
Fax: [phone]
Copyright 1995, Acromag, Inc., Printed in the USA.
Data and specifications are subject to change without notice.
8500-532-D01E003

SERIES IP400 INDUSTRIAL I/O PACK 40-CHANNEL DIGITAL INPUT MODULE
___________________________________________________________________________________________
- 2 -
The information contained in this manual is subject to change
without notice. Acromag, Inc. makes no warranty of any kind with
regard to this material, including, but not limited to, theimplied
warranties of merchantability and fitness for a particular purpose.
Further, Acromag, Inc. assumes no responsibility for any errors that
mayappear in this manual and makes no commitment to update, or
keep current, the information contained in this manual. No part of
this manual maybe copied or reproduced in any form, without the
prior written consent of Acromag, Inc.
Table of Contents Page
1.0 GENERAL INFORMATION............................................... 2
KEY IP400 FEATURES..................................................... 2
INDUSTRIAL I/O PACK INTERFACE FEATURES.......... 2
SIGNAL INTERFACE PRODUCTS.................................. 3
INDUSTRIAL I/O PACK SOFTWARE LIBRARY.............. 3
2.0 PREPARATION FOR USE................................................ 3
UNPACKING AND INSPECTION..................................... 3
CARD CAGE CONSIDERATIONS................................... 3
BOARD CONFIGURATION.............................................. 3
CONNECTORS................................................................. 3
IP Field I/O Connector (P2)............................................ 3
Input Noise and Grounding Considerations................. 4
IP Logic Interface Connector (P1).................................. 4
3.0 PROGRAMMING INFORMATION.................................... 4
ADDRESS MAPS.............................................................. 4
IP Digital Input Registers A, B, & C ............................... 5
Interrupt Enable Register............................................... 5
Interrupt Type Configuration Register............................ 5
Interrupt Polarity Register............................................... 6
Interrupt Status Register................................................ 6
Interrupt Vector Register................................................ 6
IP Identification PROM................................................... 6
IP400 PROGRAMMING CONSIDERATIONS.................. 7
Programming Interrupts................................................ 7
4.0 THEORY OF OPERATION............................................... 8
INPUTS.............................................................................. 8
LOGIC/POWER INTERFACE........................................... 8
5.0 SERVICE AND REPAIR.................................................... 8
SERVICE AND REPAIR ASSISTANCE........................... 8
PRELIMINARY SERVICE PROCEDURE......................... 9
6.0 SPECIFICATIONS............................................................. 9
GENERAL SPECIFICATIONS.......................................... 9
DIGITAL INPUTS.............................................................. 9
INDUSTRIAL I/O PACK COMPLIANCE........................... 9
APPENDIX......................................................................... 10
CABLE: MODEL 5025-550................................................ 10
CABLE: MODEL 5025-551................................................ 10
TERMINATION PANEL: MODEL 5025-552..................... 10
TRANSITION MODULE: MODEL TRANS-GP................. 10
DRAWINGS Page
4501-434 IP MECHANICAL ASSEMBLY......................... 11
4501-518 IP400 EXAMPLE INPUT CONNECTIONS...... 11
4501-519 IP400 BLOCK DIAGRAM................................. 12
4501-462 CABLE 5025-550 (NON-SHIELDED).............. 12
4501-463 CABLE 5025-551 (SHIELDED)........................ 13
4501-464 TERMINATION PANEL 5025-552................... 13
4501-465 TRANSITION MODULE TRANS-GP............... 14
IMPORTANT SAFETY CONSIDERATIONS
It is very important for the user to consider the possible adverse
effects of power, wiring, component, sensor, or software failures in
designing any type of control or monitoring system. This is
especially important where economic property loss or human life is
involved. It is important that the user employ satisfactory overall
system design. It is agreed between the Buyer and Acromag, that
this is the Buyer's responsibility.
1.0 GENERAL INFORMATION
The Industrial I/O Pack (IP) Series IP400 module is a 40-
channel digital input board. This model accepts forty 0 to 60V DC
inputs, providing up to 160 inputs per 6U-VMEbus system slot.
When mated with the Acromag IP405 Digital Output Module, this
model can be used for direct “loopback” monitoring of the output
states. The IP400 can be programmed to generate Change-Of-
State (COS), Low, or High level transition interrupts. The input
threshold is TTL compatible with hysteresis included. The IP400
utilizes state of the art Surface-Mounted Technology (SMT) to
achieve its high channel density and is an ideal choice for a wide
range of industrial control and monitoring applications that require
high-density, high-reliability, and high-performance at a low cost.
Model Operating Temperature Range
IP400 0 to 70°C
IP400E -40 to 85°C
KEY IP400 FEATURES
•High Channel Count - Interfaces with up to 40 inputs. Four
units mounted on a carrier board provide up to 160 input
channels in a single system slot.
•TTL Input Threshold - Input threshold is at TTL levels and
includes hysteresis.
•Input Hysteresis - Buffered inputs include hysteresis for
increased noise immunity.
•Programmable Change-of-State/Level Interrupts -
Interrupts are software programmable for any bit change of
state or level match on up to 12 channels (channels 0-11 only).
•Loopback Compatible with IP405 - The P2 pin assignments
of the IP400 input module correspond with those of the IP405
output module. This provides direct interface “loopback“
capability between these models.
•High Voltage Inputs - Inputs are rated to 60VDC. Input
channels are non-isolated and share a common connection.
•High Impedance Inputs - High impedance inputs minimize
loading of the input source and minimize input current.
•No Configuration Jumpers or Switches - All configuration is
performed through software command with no internal jumpers
to configure or switches to set.
INDUSTRIAL I/O PACK INTERFACE FEATURES
•High density - Single-size, industry standard, IP module
footprint. Up to four units may be mounted on a 6U VMEbus
carrier board.
•Local ID - Each IP module has its own 32-byte ID PROM
which is accessed via data transfers in the "ID Read" space.

SERIES IP400 INDUSTRIAL I/O PACK 40-CHANNEL DIGITAL INPUT MODULE
___________________________________________________________________________________________
-3-
•Supports 16-bit & 8-bit I/O - Channel register Read/Write is
performed through 16-bit (D16) or 8-bit (D08[EO]) data transfer
cycles in the IP module I/O space.
•High Speed - Acquisition times for all data transfer cycles are
described in terms of "wait" states - 1 wait state is required for
reading the inputs, 1 wait state for write operations (see
specifications for detailed information).
SIGNAL INTERFACE PRODUCTS
(See Appendixfor more information on compatible products)
This IP module will mate directly to any industry standard IP
carrier board (including Acromag AVME9630/9660 3U/6U non-
intelligent carrier boards). Consult the documentation of your carrier
board to ensure compatibility with the following interface products
(since all connections to field signals are made through the carrier
board which passes them to the individual IP modules).
Cables:
Model 5025-551-X (Shielded Cable), or Model 5025-550-X
(Non-Shielded Cable): A Flat 50-pin cable with female
connectors at both ends for connecting AVME9630/9660, or
other compatible carrier boards, to Model 5025-552 termination
panels. The “X” of Model denotes the length in feet. The
unshielded cable is recommended for digital I/O, while the
shielded cable is recommended for optimum performance with
precision analog I/O applications.
Termination Panel:
Model 5025-552: A DIN-rail mountable panel that provides 50
screw terminals for universal field I/O termination. Connects to
Acromag AVME9630/9660, or other compatible carrier boards,
via flat 50-pin ribbon cable (Model 5025-550-X or 5025-551-X).
Transition Module:
Model TRANS-GP: This module repeats field I/O connections
of IP modules A through D for rear exit from the card cage. It is
available for use in card cages which provide rear exit for I/O
connections via transition modules (transition modules can only
be used in card cages specifically designed for them). It is a
double-height (6U), single-slot module, with front panel
hardware adhering to the VMEbus mechanical dimensions,
except for shorter printed circuit board depth. It connects to
Acromag Termination Panel 5025-552 from the rear of the card
cage, and to AVME9630/9660 boards within the card cage, via
flat 50-pin ribbon cable (Model 5025-550-X or 5025-551-X).
INDUSTRIAL I/O PACK SOFTWARE LIBRARY
Acromag provides an Industrial I/O Pack Software Library
diskette (Model IPSW-LIB-M03, MSDOS format) to simplify
communication with the board. All functions are written in the “C”
programming language and can be linked to your application. Refer
to the “README.TXT” file in the root directory and the
“INFO400.TXT” file in the “IP400” subdirectory on the diskette for
more details.
2.0 PREPARATION FOR USE
UNPACKING AND INSPECTION
Upon receipt of this product, inspect the shipping carton for
evidence of mishandling during transit. If the shipping carton is
badlydamaged or water stained, request that the carrier's agent be
present when the carton is opened. If the carrier's agent is absent
when the carton is opened and the contents of the carton are
damaged, keep the carton and packing material for the agent's
inspection.
For repairs to a product damaged in shipment, refer to the
Acromag Service Policy to obtain return instructions. It is
suggested that salvageable shipping cartons and packing material
be saved for future use in the event the product must be shipped.
This board is physically protected with
packing material and electrically
protected with an anti-static bag during
shipment. However, it is recommended
that the board be visually inspected for
evidence of mishandling prior to
applying power.
The board utilizes static sensitive
components and should only be
handled at a static-safe workstation.
CARD CAGE CONSIDERATIONS
Refer to the specifications for loading and power requirements.
Be sure that the system power supplies are able to accommodate
the power requirements of the carrier board, plus the installed IP
modules, within the voltage tolerances specified.
IMPORTANT: Adequate air circulation must be provided to prevent
a temperature rise above the maximum operating temperature.
The dense packing of the IP modules to the carrier board
restricts air flow within the card cage and is cause for concern.
Adequate air circulation must be provided to prevent a temperature
rise above the maximum operating temperature and to prolong the
life of the electronics. If the installation is in an industrial
environment and the board is exposed to environmental air, careful
consideration should be given to air-filtering.
BOARD CONFIGURATION
Power should be removed from the board when installing IP
modules, cables, termination panels, and field wiring. Refer to
Mechanical AssemblyDrawing 4501-434 and your IP module
documentation for configuration and assembly instructions. Model
IP400 Input Boards have no jumpers or switches to configure--
interrupts are configured through software command.
CONNECTORS
IP Field I/O Connector (P2)
P2 provides the field I/O interface connector for mating IP
modules to the carrier board. P2 is a 50-pin female receptacle
header (AMP 173279-3 or equivalent) which mates to the male
connector of the carrier board (AMP 173280-3 or equivalent). This
provides excellent connection integrity and utilizes gold-plating in the
mating area. Threaded metric M2 screws and spacers are supplied
with the module to provide additional stability for harsh environments
(see Mechanical Assembly Drawing 4501-434). The field and logic
side connectors are keyed to avoid incorrect assembly.

SERIES IP400 INDUSTRIAL I/O PACK 40-CHANNEL DIGITAL INPUT MODULE
___________________________________________________________________________________________
-4-
P2 pin assignments are unique to each IP model (see Table 2.1)
and normally correspond to the pin numbers of the front-panel, field
I/O interface connector on the carrier board (you should verify this
for your carrier board). The IP400 P2 connector shares the same
signal pinouts with Acromag Model IP405 40-Channel Output
Boards, making it directly compatible for “loopback” monitoring of the
IP405 output states.
Table 2.1: IP400 Field I/O Pin Connections (P2)
Pin Description Number Pin Description Number
IN001IN2532
IN012IN2633
IN023IN2734
IN034IN2836
IN046IN2937
IN057IN3038
IN068IN3139
IN079IN3241
IN08 11 IN33 42
IN09 12 IN34 43
IN10 13 IN35 44
IN11 14 IN36 46
IN12 16 IN37 47
IN13 17 IN38 48
IN14 18 IN39 49
IN15 19 COMMON 5
IN16 21 COMMON 10
IN17 22 COMMON 15
IN18 23 COMMON 20
IN19 24 COMMON 25
IN20 26 COMMON 30
IN21 27 COMMON 35
IN22 28 COMMON 40
IN23 29 COMMON 45
IN24 31 COMMON 50
Input Noise and Grounding Considerations
This model is non-isolated between the logic and field input
grounds since input common is electrically connected to the IP
module ground. Consequently, the field I/O connections are not
isolated from the carrier board and backplane. Care should be taken
in designing installations without isolation to avoid noise pickup and
ground loops caused by multiple ground connections. Refer to
Drawing 4501-518 for example input and grounding connections.
IP Logic Interface Connector (P1)
P1 of the IP module provides the logic interface to the mating
connector on the carrier board. This connector is a 50-pin female
receptacle header (AMP 173279-3 or equivalent) which mates to the
male connector of the carrier board (AMP 173280-3 or equivalent).
This provides excellent connection integrity and utilizes gold-plating
in the mating area. Threaded metric M2 screws and spacers are
supplied with the IP module to provide additional stability for harsh
environments (see Drawing 4501-434 for assembly details). Field
and logic side connectors are keyed to avoid incorrect assembly.
The pin assignments of P1 are standard for all IP modules
according to the Industrial I/O Pack Specification (see Table 2.2).
Note that the IP400 does not utilize all of the logic signals defined for
the P1 connector and these are indicated in BOLD ITALICS.
Table 2.2: Standard Logic Interface Connections (P1)
Pin Description Number Pin Description Number
GND 1 GND 26
CLK2+5V27
Reset* 3 R/W* 28
D00 4 IDSEL* 29
D01 5 DMAReq0* 30
D02 6 MEMSEL* 31
D03 7 DMAReq1* 32
D04 8 IntSel* 33
D05 9 DMAck0* 34
D06 10 IOSEL* 35
D07 11 RESERVED 36
D08 12 A1 37
D09 13 DMAEnd* 38
D10 14 A2 39
D11 15 ERROR* 40
D12 16 A3 41
D13 17 INTReq0* 42
D14 18 A4 43
D15 19 INTReq1* 44
BS0* 20 A5 45
BS1* 21 STROBE* 46
-12V 22 A6 47
+12V 23 ACK* 48
+5V 24 RESERVED 49
GND 25 GND 50
Asterisk (*) is used to indicate an active-low signal.
BOLD ITALIC Logic Lines are NOT USED bythis IP Model.
3.0 PROGRAMMING INFORMATION
ADDRESS MAPS
This board is addressable in the Industrial Pack I/O space to
control the acquisition of digital inputs from the field. The I/O space
maybe as large as 64, 16-bit words (128 bytes) using address lines
A1..A6, but the IP400 only uses a portion of this space. The I/O
space address map for the IP400 is shown in Table 3.1. Note the
base address for the IP module I/O space (see your carrier board
instructions) must be added to the addresses shown to properly
access the I/O space. Accesses can be performed on an 8-bit
(D08[EO]), or 16-bit word (D16) basis.

SERIES IP400 INDUSTRIAL I/O PACK 40-CHANNEL DIGITAL INPUT MODULE
___________________________________________________________________________________________
-5-
Table 3.1: IP400 I/O Space Address (Hex) Memory Map4
EVEN
Base
Addr.+ EVEN Byte D15 D08 ODD Byte D07 D00
ODD
Base
Addr.+
00 READ- Digital Input
Channel Register A
CH15 ↔CH08
READ- Digital Input
Channel Register A
CH07 ↔CH00 01
02 READ- Digital Input
Channel Register B
CH31 ↔CH24
READ- Digital Input
Channel Register B
CH23 ↔CH16 03
04 (FF)
Not Driven1READ- Digital Input
Channel Register C
CH39 ↔CH32 05
06 (0FFF)
NOT USED3
07
08 Driven
LOW2
15.....12
R/W - Interrupt Enable
Register2
CH11 ↔CH00 09
0A Driven
LOW2
15.....12
R/W -Interrupt Type Config.
Register2
CH11 ↔CH00 0B
0C Driven2
LOW
15.....12
R/W - Interrupt Polarity
Register2
CH11 ↔CH00 0D
0E Driven2
LOW
15.....12
R/W - Interrupt Status Register2
CH11 ↔CH00 0F
10 Driven2
LOW
15.....12
(F)
Driven
HIGH
R/W - Interrupt
Vector Register1
11
12
↓
↓↓
↓
7E
(0FFF)
NOT USED313
↓
↓↓
↓
7F
Notes (Table 3.1):
1. These bits of this register are not driven. Pull-ups on the carrier
board data bus will cause these bits to always read High (1’s).
2. The upper 4 bits of these 16-bit registers are driven low (0’s).
3. These registers have no function. The upper 4 bits of these 16-
bit registers are driven low (0’s) and pullups on the data bus will
cause the lower 12-bits to read high (1’s). Embedded “Not
Used” addresses occur due to the IP400’s use of the same
register architecture as Acromag Model IP408.
4. All Read and Write operations require 1 wait state.
IP Digital Input Registers A, B, & C (Read Only)
When the Digital Input Channel Data Registers are read, the
value read corresponds to the actual state of the input channels at
the time of the read. A “0” bit means that the corresponding input
signal is below TTL threshold, a “1” bit means that the
corresponding input signal is at or above the TTL threshold
(approximately 1.6V, typical).
40 Input channels numbered 0 through 39 may be read.
Channel Read operations use 8-bit (D08[EO]), or 16-bit (D16) words
with the lower ordered bits corresponding to the lower-numbered
channels for the register of interest (see below). Register A
monitors input channels 0 through 15. Register B monitors input
channels 16 through 31. Register C monitors input channels 32
through 39. Pullups on the carrier board data bus will cause the
upper 8 bits of Register C to read back as high (1’s).
REGISTER A (INPUT CHANNELS 0 THROUGH 15):
MSB _ _ _ _ _ _ _ _ _ _ _ _ _ _ LSB
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CH15...................................CH8 CH7.....................................CH0
REGISTER B (INPUT CHANNELS 16 THROUGH 31):
MSB _ _ _ _ _ _ _ _ _ _ _ _ _ _ LSB
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
CH31.................................CH24 CH23...................................CH16
REGISTER C (INPUT CHANNELS 32 THROUGH 39):
MSB _ _ _ _ _ _ _ _ _ _ _ _ _ _ LSB
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1 1 1 1 1 1 1 1 CH39...................................CH32
It is recommended that unused input points not be left floating,
but pulled high or low. The unused upper 8 bits of Register C are
“Don’t Care” and will always read high (1’s) for D16 accesses.
Interrupt Enable Register (R/W)
The digital input channel Interrupt Enable Register provides a
mask bit for each of the 12 possible interrupt channels (channels 0-
11 only). A “0” bit will prevent the corresponding input channel from
generating an external interrupt. A “1” bit will allow the
corresponding input channel to generate an interrupt.
INTERRUPT ENABLE REGISTER:
MSB _ _ _ _ _ _ _ _ _ _ _ _ _ _ LSB
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 CH11...............................................................CH0
All input channel interrupts are masked (“0”) following a reset.
The unused upper 4 bits of this 16-bit register are always driven low
(0’s) for D08(E) or D16 accesses.
Interrupt Type Configuration (COS or H/L) Register (R/W)
The Interrupt Type Configuration Register determines the type
of input channel transition that will generate an interrupt for each of
the 12 possible interrupt channels (channels 0-11 only). A “0” bit
means that an interrupt will be generated when the input channel
level specified by the Interrupt Polarity Register occurs (i.e. Low or
High level transition interrupt). A “1” bit means the interrupt will
occur when a Change-of-State (COS) occurs at the corresponding
input channel (i.e. any state transition). Note that interrupts will not
occur unless they are enabled (see the Interrupt Enable Register).
INTERRUPT TYPE (COS or H/L) CONFIGURATION REGISTER:
MSB _ _ _ _ _ _ _ _ _ _ _ _ _ _ LSB
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 CH11...............................................................CH0
All bits are set to “0” following a reset which means that the
inputs will cause interrupts for the levels specified bythe digital input
channel Interrupt Polarity Register. The unused upper 4 bits of this
16-bit register are always driven low (0’s) for D08(E) or D16
accesses.

SERIES IP400 INDUSTRIAL I/O PACK 40-CHANNEL DIGITAL INPUT MODULE
___________________________________________________________________________________________
-6-
Interrupt Polarity Register (R/W)
The Interrupt Polarity Register determines the level that will
cause a channel interrupt to occur for each of the 12 possible
interrupt channels (channels 0-11 only). A “0” bit specifies that an
interrupt will occur when the corresponding input channel is BELOW
TTL threshold (i.e. a “0” in the digital input channel data register). A
“1” bit means that an interrupt will occur when the input channel is
ABOVE TTL threshold (i.e. a “1” in the digital input channel data
register). Note that no interrupts will occur unless they are enabled
by the Interrupt Enable Register. Further, the Interrupt Polarity
Register will have no effect if the Change-of-State (COS) interrupt
type is configured by the Interrupt Type Configuration Register.
INTERRUPT POLARITY (HIGH/LOW) REGISTER:
MSB _ _ _ _ _ _ _ _ _ _ _ _ _ _ LSB
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 CH11...............................................................CH0
All bits are set to “0” following a reset which means that the
inputs will cause interrupts when theyare below TTL threshold. The
unused upper 4 bits of this 16-bit register are always driven low (0’s)
for D08(E) or D16 accesses.
Interrupt Status Register (R/W)
The Interrupt Status Register reflects the status of the 12
possible interrupt channels (channels 0-11 only). A “1” bit indicates
that an interrupt is pending for the corresponding channel. A
channel that does not have interrupts enabled will never set its
interrupt status flag. A channel’s interrupt can be cleared by writing
a “1” to its bit position in the Interrupt Status Register (writing a “1”
acts as a reset signal toclear the set state). This is known as the
“Release On Register Access” (RORA) method, as defined in the
VME system architecture specification. However, if the condition
which caused the interrupt to occur remains (in the case of a level
interrupt), the interrupt will be generated again (unless disabled via
the Interrupt Enable Register).
Note that interrupts are prioritized via hardware within the card.
Channel 11 has the highest priority, channel 0 the lowest priority. If
multiple input channel interrupts become pending at the same time,
the vector corresponding to the highest numbered channel will be
delivered first. After the highest numbered channel’s interrupt is
serviced and cleared, an additional interrupt will be generated for the
next highest priority channel with an interrupt pending. Note that the
input channel bandwidth should be limited to reduce the possibility of
missing channel interrupts. For a specific input channel, this could
happen if multiple changes occur before the channel’s interrupt is
serviced.
INTERRUPT STATUS REGISTER:
MSB _ _ _ _ _ _ _ _ _ _ _ _ _ _ LSB
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 CH11...............................................................CH0
All interrupts are cleared following a reset. The unused upper 4
bits of this 16-bit register are always driven low (0’s) for D08(E) or
D16 accesses.
Interrupt Vector Register (R/W)
The Interrupt Vector Register maintains an 8-bit interrupt pointer
for each of the 12 digital input channel interrupt lines (channels 0-11
only). The lower 4 bits of the Interrupt Vector Register (odd-byte
address) contain the channel number that originated the interrupt.
The upper 4 bits of the odd-addressed byte are user-programmable
and contain a pointer to the interrupt service routine. Interrupts are
served on a priority basis with the higher numbered channels having
higher priority (i.e. channel 11 has the highest priority, channel 0 the
lowest). The appropriate interrupt vector is given to the VMEbus
Interrupt Handler when an interrupt is being serviced. As such, it is
a pointer to 12 possible interrupt handling routines. This allows each
digital input channel to be serviced by its own software handler.
INTERRUPT VECTOR REGISTER:
MSB _ _ _ _ _ _ _ _ _ _ _ _ _ _ LSB
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 X X X X User-Programmable Channel No.
All bits of this register are set to “0” following a reset. The upper
4 bits (even byte address) of this 16-bit register are driven low (0’s).
The lower 4 bits of the upper byte are driven high (1’s).
IP ID PROM (Read Only, 32 Odd-Byte Addresses)
Each IP module contains an identification (ID) PROM that
resides in the ID space per the IP module specification. This area of
memory contains 32 bytes of information at most. Both fixed and
variable information may be present within the ID PROM. Fixed
information includes the "IPAC" identifier, model number, and
manufacturer's identification codes. Variable information includes
unique information required for the module. The IP400 ID PROM
does not contain any variable (e.g. unique calibration) information.
ID PROM bytes are addressed using only the odd addresses in a 64
byte block (see Table 3.2).
Table 3.2: IP400 ID Space Identification (ID) PROM
Hex Offset
From ID
PROM Base
Address
ASCII
Character
Equivalent
Numeric
Value
(Hex) Field Description
01 I 49 All IP's have 'IPAC'
03 P 50
05 A 41
07 C 43
09 A3 Acromag ID Code
0B 02 IP Model Code1
0D 00 Not Used
(Revision)
0F 00 Reserved
11 00 Not Used (Driver
ID Low Byte)
13 00 Not Used (Driver
ID High Byte)
15 0C Total Number of ID
PROM Bytes
17 A3 CRC
19 to 3F yy Not Used
Notes (Table 3.2):
1. The IP model number is represented by a two-digit code within
the ID PROM (the IP400 model is represented by 02 Hex).

SERIES IP400 INDUSTRIAL I/O PACK 40-CHANNEL DIGITAL INPUT MODULE
___________________________________________________________________________________________
-7-
The IP400 ID PROM contents are shown in Table 3.2. Note
that the base-address for the IP module ID space (see your carrier
board instructions) must be added to the addresses shown to
properly access the ID PROM. Execution of an ID PROM Read
operation requires 1 wait state.
IP400 PROGRAMMING CONSIDERATIONS
To make programming and communicating with the board
easier, Acromag provides you with the Industrial I/O Pack Software
Library diskette. The functions provided are written in the “C”
programming language and can be linked into your application.
Refer to the “README.TXT” file in the root directory and the
“INFO400.TXT” file in the “IP400” subdirectory on the diskette for
details.
The following sections give some pointers for programming
interrupts.
Programming Interrupts
Digital input channels can generate interrupts for the following
conditions (channels 0-11 only):
•Any Change-of-State (COS) at selected channels.
•Input level (polarity) match at selected input channels.
Interrupts generated by the IP400 use interrupt request line
INTREQ0* (Interrupt Request 0). The interrupt release mechanism
employed is the Release On Register Access (RORA) type. This
means that the interrupter will release the Industrial I/O Pack
interrupt request line (INTREQ0) after theinterrupt has been cleared
by writing a “1” to the appropriate bit position in the input channel
Interrupt Status Register.
The Interrupt Vector Register contains a pointer to an interrupt
handling routine. The lower 4 bits of this 8-bit number contain the
channel number of the interrupting channel. The upper 4 bits of this
8-bit number contain a user-programmable pointer to complete the
vector. As such, the vector may point to any one of 12 possible
locations to access the interrupt handling routine. If each of these 8
locations contain the same address (the address of a single interrupt
handling routine), one interrupt handling routine may be used to
service all possible channel interrupts.
Interrupt service is prioritized with the higher numbered channel
having a higher priority over the lower numbered channels. Thus,
Channel 11 has the highest priority and channel 0 the lowest. As
such, if multiple channel interrupts become pending at the same
time, the pointer corresponding to the highest numbered channel will
be delivered first. After the highest numbered channel interrupt is
serviced and cleared, an additional interrupt will be generated for the
next highest priority (pending) interrupt.
When using interrupts, input channel bandwidth should be
limited to reduce the possiblity of missing channel interrupts. For a
given input channel, this could happen if multiple changes occur
before the channel’s interrupt is serviced. The response time of the
input channels should also be considered when figuring this
bandwidth. The total response time is the sum of the input buffer
response time, plus the interrupt logic circuit response time, and this
time must pass before another interrupt condition will be recognized.
The following programming examples assume that the IP400 is
installed onto an Acromag AVME9630/9660 carrier board (consult
your carrier board documentation for compatibility details).
Programming Example for AVME9630/9660 Carrier Boards:
1. Clear the Global Interrupt Enable Bit in the Carrier Board Status
Register by writing a “0” to bit 3.
2. Perform Specific IP Module Programming - see the Change-of-
State or Level Match programming examples that follow, as
required for your application.
3. Write to the carrier board Interrupt Level Register to program the
desired interrupt level per bits 2, 1, & 0.
4. Write “1” tothe carrier board IP Interrupt Clear Register
corresponding to the desired IP interrupt request(s) being
configured.
5. Write “1” tothe carrier board IP Interrupt EnableRegister bits
corresponding to the IP interrupt request to be enabled.
6. Enable interrupts from the carrier board by writing a “1” to bit 3
(the Global Interrupt Enable Bit) of the Carrier Board Status
Register.
IP Programming Example for Change-of-State Interrupts:
1. Program the upper 4 bits of the odd-addressed byte of the
Interrupt Vector Register with the user specified portion of the
interrupt vector. These 4 bits combined with the lower 4 bits
(the interrupting channel number) form a pointer to one of 12
possible locations in memory that contain the address of the
interrupt handling routine for the interrupting channel.
2. Select Change-of-State interrupts for channels by writing a “1”
to each channel’s respective bit in the Interrupt Type Register
for channels that are to generate interrupts.
3. Enable individual input channel interrupts by writing a “1” to
each channel’s respective bit in the Interrupt Enable Register.
4. Clear pending interrupts by writing a “1” to each channel’s
respective bit in the Interrupt Status Register.
Change-of-State Interrupts may now be generated by the input
channels programmed above for any Change-Of-State
transition.
IP Programming Example for Level (Polarity) Match Interrupts:
1. Program the upper 4 bits of the odd-addressed byte of the
Interrupt Vector Register with the user specified portion of the
interrupt vector. These 4 bits combined with the lower 4 bits
(the interrupting channel number) form a pointer to one of 12
possible locations in memory that contain the address of the
interrupt handling routine for the interrupting channel.
2. Select Polarity interrupts for channels by writing a “0”
to each channel’s respective bit in the Interrupt Type Register
for channels that are to generate interrupts.
3. Select the desired polarity (High/Low) level for interrupts by
writing a “0” (Low) or “1” (High) level to each channel’s
respective bit in the Interrupt Polarity Register.
4. Enable individual input channel interrupts by writing a “1” to
each channel’s respective bit in the Interrupt Enable Register.
5. Clear pending interrupts by writing a “1” to each channel’s
respective bit in the Interrupt Status Register.
Interrupts can now be generated by matching the input level with
the selected polarity for programmed interrupt channels.

SERIES IP400 INDUSTRIAL I/O PACK 40-CHANNEL DIGITAL INPUT MODULE
___________________________________________________________________________________________
-8-
General Sequence of Events for Processing an Interrupt
1. The IP400 asserts the Interrupt Request 0 Line (IREQ0*) in
response to an interrupt condition at one or more inputs.
2. The AVME9630/9660 carrier board acts as an interrupter in
making the VMEbus interrupt request (asserts IRQx*)
corresponding to the IP interrupt request.
3. The VMEbus host (interrupt handler) asserts IACK* and the
level of the interrupt it is seeking on A01-A03.
4. When the asserted VMEbus IACKIN* signal (daisy-chained) is
passed to the AVME9630/9660, the carrier board will check if
the level requested matches that specified by the host. If it
matches, the carrier board will assert the IntSel* line to the
appropriate IP together with (carrier board generated) address
bit A1 to select which interrupt request is being processed (A1
low corresponds to IntReq0*; A1 high corresponds to IntReq1*).
5. The IP400 puts the appropriate interrupt vector on the local data
bus (D00-D07 for the D08 [O] interrupter) and asserts ACK* to
the carrier board. The carrier board passes this along to the
VMEbus (D08[O]) and asserts DTACK*.
6. The host uses the vector to form a pointer to an interrupt service
routine for the interrupt handler to begin execution.
7. Example of Generic Interrupt Handler Actions:
A. Disable the interrupting IP by writing “0” to the appropriate
bit in the AVME9630/9660 IP Interrupt Enable Register.
B. Disable the interrupting channel(s) by writing a “0” to the
appropriate bits in the IP400 Interrupt Enable Register.
C. Clear the interrupting channel(s) by writing a “1” to the
appropriate bits in the IP400 Interrupt Status Register.
D. Enable the interrupting channel(s) by writing a “1” to the
appropriate bits in the IP400 Interrupt Enable Register.
E. Clear the interrupting IP by writing a “1” to the appropriate
bit in the AVME9630/9660 IP Interrupt Clear Register.
F. Enable the interrupting IP by writing a “1” to the appropriate
bit in the AVME9630/9660 IP Interrupt Enable Register.
8. If the IP400 interrupt stimulus has been removed and no other IP
modules have interrupts pending, the interrupt cycle is complete
(i.e. the carrier board negates its interrupt request, IRQ*).
A. If the IP400 interrupt stimulus remains, a new interrupt
request will immediately follow. If the stimulus cannot be
removed, then the IP400 interrupt enable bit should be
disabled or reconfigured.
B. If other IP modules have interrupts pending, then the
interrupt request (IRQx*) will remain asserted. This will
start a new interrupt cycle.
4.0 THEORY OF OPERATION
This section describes thebasic functionalityof thecircuitry
used on the board. Refer to the Block Diagram shown in Drawing
4501-519 as you review this material.
INPUTS
The field I/O interface to the carrier board is provided through
connector P2 (refer to Table 2.1). Field inputs are NON-
ISOLATED. This means that the field return and logic common
have a direct electrical connection to each other. As such, care
must be taken to avoid ground loops (see Section 2 for connection
recommendations). Ignoring this effect may cause operation errors,
and with extreme abuse, possible circuit damage. Refer to Drawing
4501-518 for example input and grounding connections.
A Field Programmable Gate Array (FPGA) is used to generate
all the logic necessary to operate the board. It is driven by 16
individual input buffers (channels 0-15). The balance of the input
buffers selectively drive the 16-bit data bus directly. Field input
signals are tied to the buffer inputs via 100KΩseries connected
resistors to limit input current. Additionally, the buffer inputs are
clamped to +4.7V (generated from the +12V supply to minimize +5V
loading). The input signal threshold is TTL compatible. The typical
threshold is 1.5V DC with about 200mV of hysteresis.
Digital input channels of this model can be configured to
generate interrupts for Change-Of-State (COS) or input level
(polarity) match conditions for selected input channels (channels 0-
11 only). Interrupt service is prioritized with the higher numbered
channel having a higher priority over the lower numbered channels.
An 8-bit interrupt service routine vector is provided during interrupt
acknowledge cycles on data lines D0...D7. The interrupt release
mechanism employed is RORA (Release On Register Access).
Since IP400 40-channel input boards use the same field I/O pin
assignments (P2) as Model IP405 40-channel output boards, these
units are directly compatible for loopback monitoring of the IP405
output states.
LOGIC/POWER INTERFACE
The logic interface to the carrier board is made through
connector P1 (refer to Table2.2). Not all of the IP logic P1 pin
functions are used. P1 also provides +5V and +12V to power the
module (-12V is not used).
All I/O, address decoding, control signals, interrupt handling,
and ID access logic, is done through a programmable gate array
installed on the IP module. The program for the gate array is stored
in separate PROM memory and loaded upon reset. The FPGA also
returns the acknowledgement signal required by the carrier board
per the IP specification.
The ID PROM (read only) installed on the IP module provides
the identification for the individual module per the IP specification.
The ID PROM, input and interrupt registers are all accessed through
the 16-bit data bus interface to the carrier board (D0..D15).
5.0 SERVICE AND REPAIR
SERVICE AND REPAIR ASSISTANCE
Surface-Mounted Technology (SMT) boards are generally
difficult to repair. It is highly recommended that a non-functioning
board be returned to Acromag for repair. The board can be easily
damaged unless special SMT repair and service tools are used.
Further, Acromag has automated test equipment that thoroughly
checks the performance of each board. When a board is first
produced and when any repair is made, it is tested, placed in a burn-
in room at elevated temperature, and retested before shipment.
Please refer to Acromag's Service Policy Bulletin or contact
Acromag for complete details on how toobtain parts and repair.

SERIES IP400 INDUSTRIAL I/O PACK 40-CHANNEL DIGITAL INPUT MODULE
___________________________________________________________________________________________
-9-
PRELIMINARY SERVICE PROCEDURE
Before beginning repair, be sure that all of the procedures in
Section 2, Preparation For Use, have been followed. Also, refer to
the documentation of your carrier board to verify that it is correctly
configured. Replacement of the module with one that is known to
work correctly is a good technique to isolate a faulty module.
CAUTION: POWER MUST BE TURNED OFF BEFORE
REMOVING OR INSERTING BOARDS
Acromag’s Applications Engineers can provide further technical
assistance if required. When needed, complete repair services are
also available from Acromag.
6.0 SPECIFICATIONS
GENERAL SPECIFICATIONS
Operating Temperature......…..…...0 to +70°C.
-40 to +85°C (E Version)
Relative Humidity...................….....5-95% Non-Condensing.
Storage Temperature..............…..-25 to +85°C.
-55 to +125°C (E Version)
Physical Configuration..................Single Industrial I/O Pack Module.
Length....................................3.880 in. (98.5 mm).
Width.....................................1.780 in. (45.2 mm).
Board Thickness....................0.062 in. (1.59 mm).
Max Component Height..........0.314 in. (7.97 mm).
Connectors:
P1 (IP Logic Interface)...........50-pin female receptacle header
(AMP 173279-3 or equivalent).
P2 (Field I/O)..........................50-pin female receptacle header
(AMP 173279-3 or equivalent).
Power:
+5 Volts (±5%)........................15mA Typical; 30mA Maximum.
+12 Volts (±5%) from P1.........7.3mA Typical; 8.5mA Maximum.
-12 Volts (±5%) from P1..........0mA (Not Used).
Non-Isolated...................................Logic and field I/O common have
a direct electrical connection.
DIGITAL INPUTS
Input Channel Configuration.........40 non-inverting buffered inputs
with a common connection. For
DC voltage applications only,
observe proper polarity. Channels
0-11 can be configured to
generate interrupts.
Input Signal Voltage Range...........0 to +60V DC, Maximum.
Input Signal Threshold..................TTL compatible. 1.5VDC with
200mV of hysteresis, typical.
Thus, Low-to-High threshold is
1.6VDC, High-to-Low is 1.4VDC,
typical. Limited to TTL levels of
0.8VDC (maximum LOW level)
and 2.0VDC (minimum HIGH
level).
Input Resistance...........................100KΩ, Typical.
Input Hysteresis............................200mVDC centered at a 1.5VDC
threshold, Typical.
Input Current.................................560uA, Typical at 60V DC.
Interrupt Input Response Time.......250nS minimum to 375nS
maximum, depending on when
the input transition occurs with
respect to the 8MHz clock.
Measured from input transition to
INTREQ0 line assertion.
Resistance to RFI...........................No digital upsets occur for field
strengths up to 10V per meter at
27MHz, 151MHz, & 460MHz per
SAMA PMC 33.1 test
procedures.
Resistance to EMI..........................Unit has been tested with no
digital upsets under the influence
of EMI from switching solenoids,
commutator motors, and drill
motors.
ESD Protection..............................Inputs exhibit no degradation of
performance with repeated ESD
induced voltages to ±6KV per
DOD-STD-1686.
INDUSTRIAL I/O PACK COMPLIANCE
Specification.................................This module meets or exceeds all
written Industrial I/O Pack
specifications per revision 0.7.1.
Electrical/Mechanical Interface.....Single-Size IP Module.
IP Data Transfer Cycle Types Supported:
Input/Output (IOSel*).............16-bit (D16) word or 8-bit
(D08[EO]) read of data on D0..15.
ID Read (IDSel*)....................32 x 8 ID PROM read on D0..D7.
Access Times (8MHz Clock):
ID PROM Read......................1 wait state(375ns cycle).
Channel Registers Read........1 wait state (375ns cycle).
Interrupt Registers Read........1 wait state (375ns cycle).
Interrupt Registers Write........1 wait state (375ns cycle).
Interrupts:
Handling Format.....................12 interrupt channels are
supported (channels 0-11 only).
An 8-bit vector is provided during
interrupt acknowledge cycles on
D0...D7. The release mechanism
is RORA type (Release On
Register Access).

SERIES IP400 INDUSTRIAL I/O PACK 40-CHANNEL DIGITAL INPUT MODULE
___________________________________________________________________________________________
-10-
APPENDIX
CABLE: MODEL 5025-550-x (Non-Shielded)
MODEL 5025-551-x (Shielded)
Type: Flat Ribbon Cable, 50-wires (female connectors at both
ends). The ‘-x’ suffix designates the length in feet (12 feet
maximum). Choose shielded or unshielded cable according to
model number. The unshielded cable is recommended for
digital I/O, while the shielded cable is recommended for
optimum performance with precision analog I/O applications.
Application: Used to connect a Model 5025-552 termination panel to
the AVME9630/9660 non-intelligent carrier board A-D
connectors (both have 50-pin connectors).
Length: Last field of part number designates length in feet (user-
specified, 12 feet maximum). It is recommended that this length
be kept to a minimum to reduce noise and power loss.
Cable: 50-wire flat ribbon cable, 28 gage. Non-Shielded cable
model uses Acromag Part 2002-211 (3M Type C3365/50 or
equivalent). Shielded cable model uses Acromag Part 2002-261
(3M Type 3476/50 or equivalent).
Headers (Both Ends): 50-pin female header with strain relief.
Header - Acromag Part 1004-512 (3M Type 3425-6600 or
equivalent). Strain Relief - Acromag Part 1004-534 (3M Type
3448-3050 or equivalent).
Keying: Headers at both ends have polarizing key to prevent
improper installation.
Schematic and Physical Attributes: For Non-Shielded cable model,
see Drawing 4501-462. For Shielded cable model, see Drawing
4501-463.
Shipping Weight: 1.0 pound (0.5Kg),packaged.
TERMINATION PANEL: MODEL 5025-552
Type: Termination Panel For AVME9630/9660 Boards
Application: To connect field I/O signals to the Industrial I/O Pack
(IP). Termination Panel: Acromag Part 4001-040 (Phoenix
Contact Type FLKM 50). The 5025-552 termination panel
facilitates the connection of up to 50 field I/O signals and
connects to the AVME9630/9660 3U/6U non-intelligent carrier
boards (A-D connectors only) via a flat ribbon cable (Model
5025-550-x or 5025-551-x). The A-D connectors on the carrier
board connect the field I/O signals to theP2 connector on each
of the Industrial I/O Pack modules. Field signals are accessed
via screw terminal strips. The terminal strip markings on the
termination panel (1-50) correspond to P2 (pins 1-50) on the
Industrial I/O Pack (IP). Each Industrial I/O Pack (IP) has its
own unique P2 pin assignments. Refer to the IP module manual
for correct wiring connections to the termination panel.
Schematic and Physical Attributes: See Drawing 4501-464.
Field Wiring: 50-position terminal blocks with screw clamps. Wire
range 12 to 26 AWG.
Connections to AVME9630/9660: P1, 50-pin male header with
strain relief ejectors. Use Acromag 5025-550-x or 5025-551-x
cable to connect panel to VME board. Keep cable as short as
possible to reduce noise and power loss.
Mounting: Termination panel is snapped on the DIN mounting rail.
Printed Circuit Board: Military grade FR-4 epoxy glass circuit board,
0.063 inches thick.
Operating Temperature: -40°C to +100°C.
Storage Temperature: -40°C to +100°C.
Shipping Weight: 1.25 pounds (0.6kg) packaged.
TRANSITION MODULE: MODEL TRANS-GP
Type: Transition module for AVME9630/9660 boards.
Application: To repeat field I/O signals of IP modules A through D
for rear exit from VME card cages. This module is available for
use in card cages which providerear exit for I/O connections via
transition modules (transition modules can only be used in card
cages specifically designed for them). It is a double-height
(6U), single-slot module with front panel hardware adhering to
0the VMEbus mechanical dimensions, except for shorter printed
circuit board depth. Connects to Acromag termination panel
5025-552 from the rear of the card cage, and to
AVME9630/9660 boards within card cage, via flat 50-pin ribbon
cable (cable Model 5025-550-X or 5025-551-X).
Schematic and Physical Attributes: See Drawing 4501-465.
Field Wiring: 50-pin header (male) connectors (3M 3433-D303 or
equivalent) employing long ejector latches and 30 micron gold in
the mating area (per MIL-G-45204, Type II, Grade C).
Connects to Acromag termination panel 5025-552 from the rear
of the card cage via flat 50-pin ribbon cable (cable Model
5025-550-X or 5025-551-X).
Connections to AVME9630/9660: 50-pin header (male) connectors
(3M 3433-1302 or equivalent) employing long ejector latches
and 30 micron gold in the mating area (per MIL-G-45204, Type
II, Grade C). Connects to AVME9630/9660 boards within the
card cage via flat 50-pin ribbon cable (cable Model 5025-550-X
or 5025-551-X).
Mounting: Transition module is inserted into a 6U-size, single-width
slot at the rear of the VMEbus card cage.
Printed Circuit Board: Six-layer, military-grade FR-4 epoxy glass
circuit board, 0.063 inches thick.
Operating Temperature: -40°C to +85°C.
Storage Temperature: -55°C to +105°C.
Shipping Weight: 1.25 pounds (0.6Kg) packaged.

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