Calibrating the output modules, Calibrating the output modules -8 – Rockwell Automation 1797-OE8 FLEX Ex Analog Modules User Manual User Manual
Page 64
Publication 1797-6.5.1 - May 2005
5-8 Calibrating Your Module
Calibrating the
Output Modules
To calibrate the 1797-OE8 module use the following general method:
1. Attach the precision current meters(s) to the module.
2. Send a message to the module to set its Output Enable bit to 1. This
enables its outputs.
3. Send a message to the module instructing it perform Zero Min and
Max Scale Coefficients.
4. Await an echo message from the module announcing that it has
performed Zero Min and Max Scale Coefficients.
5. Send a message to the module instructing it to perform Min Scale
Calibration (1mA) on the channel(s).
6. Await an echo message from the module announcing that it has
performed Min Scale Calibration.
Precision
Current
Sources
Precision
Current
Sources
Row A
1
0
2
3
4
5
6
7
8
9
10
11
12
13
14
15
28
29
30
31
32
33
22
23
24
25
26
27
16
17
18
19
20
21
41660
Ch 0
Ch 1
Ch 2
Ch 3
Ch 4
Ch 5
Ch 6
Ch 7
Row B
+ sig –
+ sig –
+ sig –
+ sig –
+ sig –
+ sig –
+ sig –
+ sig –