264 Rockwell Automation Publication 1766-UM001O-EN-P - September 2021
Appendix F MicroLogix 1400 Distributed Network Protocol
The elements can be seen in the Function Files for each Channel.
65 CS0:65 CS2:65 Transmitted Solicited Response Function Code Counter
66 CS0:66 CS2:66 Transmitted Unsolicited Response Function Code Counter
67 CS0:67 CS2:67 Number of events to be reported
68 CS0:68 CS2:68
Transport Function Layer Error Codes
0: NO_ERROR – No error found in the Transport Layer.
1: DISCARD_NOT_FIRST_SEG – The received packet was discarded since it was not a first segment.
2: DISCARD_DUPLICATED_AND_MORE_SEG – The received packet was discarded since it had the same
sequence number as previous, more segments are expected.
3: DISCARD_DUPLICATED_AND_FINAL_SEG – The received packet was discarded since it had the same
sequence number as previous, final segment received.
4: DISCARD_OUT_OF_ORDER_SEG – The received packet was discarded since the sequence number was out
of order.
69 CS0:69 CS2:69 Transport Layer Error Count
70 CS0:70 CS2:70 End Of List Category ID (0)
Table 31 - Communication Status File Words (Continued)
Words Offset
File/Element
Description for
Channel 0
File/Element
Description for
Channel 2
Description
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