ABB 615 Series ANSI Manual page 21

1MAC052634-MB D
615/620 series ANSI
Communication Protocol Manual
Function
Name
code
11 Return bus message count
12 Return bus communication error count
13 Return bus exception error count
14 Return slave message count
15 Return slave no response count
16 Return slave NACK response count
18 Return bus character overrun count
Vendor-specific implementation
Description
The response returns the number of
messages in the communication system
detected by the slave since its last restart,
clear counters operation and power up.
The response returns the number of CRC
errors encountered by the slave since its last
restart, clear counters operation and power
up.
The response returns the number of Modbus
exception responses sent by the slave since
its last restart, clear counters operation and
power up.
The response returns the number of
messages addressed to the slave or
broadcast which the slave has processed
since its last restart, clear counters operation
or power up.
The response returns the number of
messages addressed to the slave for which a
response (neither a normal response nor an
exception response) has not been sent since
its last restart, clear counters operation or
power up.
The number of messages addressed to the
slave for which a negative acknowledgement
response has been sent is returned in the
response.
The response returns the number of
messages addressed to the slave for which it
has not been able to send a response due to
a character overrun since its last restart,
clear counters operation or power up.
Section 3
15