Communicating with a PLC-5 Adapter Channel

7-19

 

 

Monitoring Remote I/O Adapter Channels

To monitor channels that are configured to support adapter mode, use the adapter mode status screen. The data displayed is stored in the diagnostic file you defined in the adapter mode configuration screen of your programming software.

Status Field

Location

Description

Messages sent

word 1

Displays the number of messages sent by the channel.

 

 

 

Messages sent with error

word 3

Displays the number of messages containing errors sent by the channel.

 

 

 

Messages received

word 0

Displays the number of error-free messages received by the channel.

 

 

 

Messages received with error

word 2

Displays the number of messages containing errors received by the channel.

 

 

 

Messages unable to receive

word 4

Displays number of messages that contained protocol errors or packets that were garbled by

 

 

the adapter.

 

 

 

Link timeout

word 5

Displays the number of times a timeout occurred on the remote I/O link.

 

 

 

No scans received

word 6

Displays the number of times an adapter channel did not receive a packet addressed to itself.

 

 

 

Mode changed

word 7

Displays the number of times the adapter channel switched to online.

 

 

 

Protocol fault

word 8

Displays the number of invalid I/O messages the adapter channel received.

 

 

 

Missed turn-around time

word 9

Displays the number of times the adapter channel took longer than 2 ms to process a message

 

 

packet. The turn around-time for message packet processing is 2 ms.

 

 

 

Publication 1785-UM012D-EN-P - July 2005

Page 117
Image 117
Bradley Smoker PLC-5 user manual Monitoring Remote I/O Adapter Channels, Messages received with error