1MAC052634-MB D
Section 3
Vendor-specific implementation
615/620 series ANSI
15
Communication Protocol Manual
11
Return bus message count
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.
12
Return bus communication error count
The response returns the number of CRC
errors encountered by the slave since its last
restart, clear counters operation and power
up.
13
Return bus exception error count
The response returns the number of Modbus
exception responses sent by the slave since
its last restart, clear counters operation and
power up.
14
Return slave message count
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.
15
Return slave no response count
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.
16
Return slave NACK response count
The number of messages addressed to the
slave for which a negative acknowledgement
response has been sent is returned in the
response.
18
Return bus character overrun count
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.
Function
code
Name
Description
