AC-1-4
ANALOG TO CAN BUS MODULE
USER MANUAL
Rev. C 10/2/2014
Overview
Number of Analog Channels
Input Voltage Range
Resolution
Accuracy
4
0-5
16-Bit
0.1% F.S.
-
V
-
-
Supply Voltage
Current (No Load)
Excitation Voltage
Excitation Current
6 - 24
35
5
150
V DC
mA
V DC
mA
The Techmor AC-1-4 is a precision four channel module that converts 0-5 volt analog
inputs to digital messages that can be received via CAN bus. The AC-1-4 has an
integrated 5 volt, 150 mA supply to power sensors or other peripherals. The CAN ID of
the unit can be changed via a CAN bus message.
Connections
All connections to the AC-1-4 are through the two multi-conductor cables on either end of
the enclosure.
Input
The AC-1-4 has four 16-bit 0-5 volt analog channels. The inputs are accessed via the 6conductor cable on the “Input” side of the enclosure. The channels are single-ended and
share a common ground.
Electrical
The AC-1-4 can be supplied with 6-24V DC via the red and black wires on the 4conductor cable on the Power/CAN side of the enclosure.
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CAN Bus Message Format
CAN Message Bits
Default CAN Message ID
Bits 0-15
Bits 16-31
Bits 32-47
Bits 48-63
11 (0x00B)
AN1
AN2
n/a
n/a
12 (0x00C)
AN3
AN4
n/a
n/a
Change CAN ID
Message ID
Bits 0-15
Bits 16-31
Bits 32-47
Bits 48-63
0x7FE
0x9269
0x0000
ID to write
(0x0 to
0x7FD)
Serial # of
device to
prog.
Note: All Messages are Unsigned 16-bit Words (U16)
CAN Bus Message Decode
Channel Output (Voltage) = Counts * 0.0001
Changing the CAN ID
The CAN ID of the AC-1-4 can be set by the user by sending a special programing
message to the unit. The message format is as follows:
Mechanical Dimensions
DIMENSIONS ARE IN INCHES
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Ordering and Contact Information
Ordering Information
AC-1-4
Company Information
Techmor, Inc. designs, markets, and sells advanced test and measurement equipment. Cornelius, North
Carolina-based Techmor is the leader in innovation for aerospace, automotive and industrial systems.
Techmor, Inc.
19911-D North Cove Road
Cornelius, NC 28031
Main: +1-704-769-0001
http://www.techmor.com
sales@techmor.com
Support Information
For support on Techmor products, contact:
support@techmor.com +1-704-769-0001
Copyright 2014.
The information contained in this document is proprietary and confidential, and property of Techmor, Inc.
Any use of this information, without written consent of Techmor, Inc. is prohibited by law.
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