Installation manual

Publication 1747-RM001G-EN-P - November 2008
SLC Communication Channels 13-15
Table 13.5 SLC 5/04 Channel 1 DH+ Channel Status
Status field Word Displays the
Messages Received 0 Number of error-free messages the station has received. This number is the sum of the
SDA and SDN received counters.
Sent 1 Total number of messages sent by the station. This number is the sum of the send data
acknowledge counters (SDA) and send data no acknowledge (SDN) transmit confirm
counters.
Received with error 2 Number of invalid messages that the station has received. This number is the sum of the
SDA received with error and the SDA received SAP off counters.
Sent with error 3 Number of messages sent that were not acknowledged. This number is the sum of the
following.
• SDA transmit NAK misc
• Transmit NAK full
• SDA transmit NAKed SAP
• SDA/SDN retrans
• Dropped token
Unable to receive 4 Total number of times the station NAKed an incoming message due to the lack of an
available buffer. This number should be the same as the SDA received but full counter.