Rockwell Automation SA500 Diagnostics, Troubleshooting Guide - Manual (Page 31)

Installation and Start-Up Guidelines 4-11
Step 4. Examine register 88/1088 for the status of the fiber-optic ports on the UDC
module. If the operating systems are loaded and no tasks are running, the
lower byte should be equal to xx03H (UDC module and PMI are exchanging
data). The upper byte should be equal to 02xxH (communication between the
UDC module and PMI is unsynchronized). Note that “xx” in the byte
descriptions indicates “not used.”
Step 5. Examine register 89/1089 for the number of messages transmitted by the
UDC module. Over time, this 16-bit value should increase to its maximum
value (32767) and then roll over.
4.7.7.2 Testing Rail I/O Registers
This section describes how to test the rail I/O registers if used in your system
configuration. Use the AutoMax Programming Executive software I/O Monitor function
to display the Rail I/O registers in the format listed in table 4.2.
Display these registers in decimal format if they are used for analog I/O. Display them
in binary format if they are used for digital I/O.
Step 1. Test each analog current or voltage output channel being used by writing a
value between 0 and 4095 to the appropriate register and measuring with an
ammeter or voltmeter to verify the signal on the terminal points (4-20mA or
0-10V) is proportional to the register value.
Step 2. Test each analog current or voltage input channel being used by measuring
with an ammeter or voltmeter to verify the signal on the terminal points
(4-20mA or 0-10V) is proportional to the value displayed in appropriate
register.
Step 3. Test each digital input by initiating the input and verifying that the appropriate
bit (displayed on the screen) turns on.
Step 4. Test each digital output by forcing the bit on and verifying that the signal is
present on the terminal points.
Table 4.2 – Rail I/O Register Formats
Drive
A / B Register Name
0 / 12 PMI Port 0, Channel 0
1 / 13 PMI Port 0, Channel 1
2 / 14 PMI Port 0, Channel 2
3 / 15 PMI Port 0, Channel 3
4 / 16 PMI Port 0, Faults (display in binary format)
5 / 17 PMI Port 0, Check Bit Fault Counter (display in decimal format)
6 / 18 PMI Port 1, Channel 0
7 / 19 PMI Port 1, Channel 1
8 / 20 PMI Port 1, Channel 2
9 / 21 PMI Port 1, Channel 3
10 / 22 PMI Port 1, Faults (display in binary format)
11 / 23 PMI Port 1, Check Bit Fault Counter (display in decimal format)