Rockwell Automation SA3100 Diag,Troublesht,Startup,Guide User Manual
Page 44
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Diagnostics, Troubleshooting, and Start-Up Guidelines
Step 1. Test each digital input by initiating the input and verifying that the appropriate
bit (displayed on the screen) goes on.
Step 2. Test each digital output by forcing the bit on and verifying that the signal is
present on the terminal points.
Step 3. Test any analog current or voltage output channel being used by writing a
value shown in table 4.3 to the channel and verifying with an ammeter or
voltmeter that the signal on the terminal points (4-20mA, 0-20mA, +/- 10V, or
0-10V) is proportional.
Step 4. Test any analog current or voltage input channel being used by verifying that
the input signal in that channel (4-20mA, 0-20mA, +/- 10V, or 0-10V) is
proportional to the value displayed in appropriate register.
Digital Data Formats
Some digital I/O modules are only 8 bits and do not require the full 16 bits of the
assigned UDC register. If the module is only 8 bits, then bits 8 through 15 are not
used. Bit 0 is defined as Digital I/O channel 0, bit 1 is channel 1, etc.
Flex I/O module IB10X0B6 (10 input/6 output digital combo module) is mapped to
UDC memory as shown below, with the lower ten bits configured as inputs and the
upper 6 bits as outputs.
0 = Output
I = Input
Data Format: 8-bit Digital I/O
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Data
-
-
-
-
-
-
-
-
I/O I/O I/O I/O I/O I/O I/O I/O
Data Format: Module IB10X0B6 - 10 Input / 6 Output Digital Combo
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Data
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I