Rockwell-automation 855T DeviceNet Stack Light User Manual Manuel d'utilisateur télécharger pdf (Page 37)

Operations 4-7

Publication 855T-UM001C-EN-P May 2005

Parameter 22 — DeviceNet Voltage

This read only parameter is used for monitoring the DeviceNet voltage at the node. The

voltage reported via Parameter 22 may vary from actual voltage by up to 1V DC.

I/O Configuration

The I/O messaging is set up by the master device through client/server connections at

power-up. This device supports both Change-of-State (COS), cyclic, and Polled

I/O messaging connections. The default I/O size is one input byte and one output byte with

a polled I/O connection

The Output command is defined as follows:

Table 4.N Output Command Byte

Bit Number Function When = 1 Function When = 0

7——

6——

5——

4 Output 5 Execute Output 5 Idle

3 Output 4 Execute Output 4 Idle

2 Output 3 Execute Output 3 Idle

1 Output 2 Execute Output 2 Idle

0 Output 1 Execute Output 1 Idle

Table 4.O Input Byte

Bit Number Function When = 1 Function When = 0

7— —

6— —

5— —

4 Position 5 Idle, Not Present, or Burned Out Position 5 Normal

3 Position 4 Idle, Not Present, or Burned Out Position 4 Normal

2 Position 3 Idle, Not Present, or Burned Out Position 3 Normal

1 Position 2 Idle, Not Present, or Burned Out Position 2 Normal

0 Position 1 Idle, Not Present, or Burned Out Position 1 Normal

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 71 72

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Rockwell-automation 855T DeviceNet Stack Light User Manual Manuel d'utilisateur Page 37