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ALM
Normal operation: Off
Alarm Condition Detected: RED, solid lit.
▪
One or more alarms have been tripped.
▪
Read module Alarm Registers based on Alarm Configuration to determine system status
The following troubleshooting tips can be used to further diagnose and fix system problems:
▪
Remove and reinstall MAQ20 I/O module and/or MAQ20-COMx module to verify proper
insertion into Backbone
▪
Remove and reinstall MAQ20 I/O module into another backbone position
▪
If a Backbone extension cable is used, ensure that the connections are made correctly
8.0 Module Identification and Status Registers
Module identification including model number, serial number, date code and firmware revision are
stored in module registers starting at address 0.
I/O modules in a system are identified in general by their model number (MAQ20-RTD31, MAQ20-
VDN, etc.) and uniquely by their Serial Number printed on the side label (1234567-89). When I/O
modules are installed in the system, only a general identifier is visible on the front of the module
(RTD, V, etc.). Wire tags or additional labeling applied to the module terminal block may be used for
visible unique identification in an installed system. Additionally, the system has a utility to provide a
visual indication of module response for identification. Any write to address 98 plus the offset based
on the Registration Number will blink the STATUS LED on the top angled surface of the module at a
5Hz rate for 5 seconds.
The
MAQ20-RTD31 Address Map
manual. An excerpt from the MAQ20-RTD41 Address Map is shown below. Module identification is
stored starting at module register address 0, which is system register address 2000*R+100, where R
is the module Registration Number. Refer to the
details.
Table 2: MAQ20-RTD41 Address Map Excerpt – Module Information
Start
Read/
Number of
Address
Write
Registers
0
R
19
R
30
R
35
R
40
R
41
R
98
W
MA1044 MAQ20-RTD31/-RTD41 Hardware User Manual
and
MAQ20-RTD41 Address Map
Address Range 0 - 99 : Module Information
Contents
15
Device Description
11
Serial Number
5
Date Code
5
Firmware Rev
1
Input Channels
1
Output Channels
1
Module Detect
are found at the end of this
MAQ20 I/O Module Registration
Description
MAQ20-RTD41
S1234567-89
D0622 (D<month><year>)
Fx.xx
5 Input Channels
0 Output Channels
Any write will blink Status LED
at 5Hz for 5 seconds
section for further
Data
Data Range
type
Characters,
Numbers, "-"
ASCII
and Space
Characters,
Numbers, "-"
ASCII
and Space
Characters,
ASCII
Numbers
Characters,
Numbers
ASCII
and "."
5
ASCII
0
ASCII
0 to 65,535
INT16
Page 9 of 38
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