Information On Modbus 1; Modbus Details - AUMA AUMATIC AC 01.2 Manual

Actuator controls
AC 01.2/ACExC 01.2 Modbus RTU
Table 31: Information on Modbus 1
Indication on display
MD1 slave address M0412
Baud rate M0766
Channel 1 DataEx M0784
Channel 1 activity M0767
Bus Message Count M0918
Bus Com Err Count M0919
Slave Except Err Count M0920
Slave Message Count M0921
Slave No Resp. Count M0922
Slave NAK Count M0923
Slave Busy Count M0924
Bus Char Overr Count M0925
Parity Error Count M0926
Table 32: Modbus details
Indication on display
Channel 1 active
Channel 2 active
The <Information on Modbus 1> tables shows the menus for the 1st Modbus interface.
In case a second, redundant Modbus interface is installed, this table may be used
as well. In the menu, Modbus MD2 is displayed instead of Modbus MD1.
Value and description
Bus address (slave address)
Baud rate
Channel 1 is in the data exchange state (DataEx).
Bus communication available on channel 1
Number of valid messages received (including all addresses).
Number of messages that the remote device has detected on the communications system
since its last restart, clear counters operation, or power up. Messages with bad CRC are
not taken into account.
Number of messages with CRC or parity/block check/data loss error.
Number of CRC errors recorded by the remote device since its last restart, clear counters
operation, or power up. In case of an error detected on the character level, (overrun,
parity error), or in case of a message length < 3 bytes, the recipient is not able to perform
the CRC test. In such cases, this counter is also incremented.
Number of sent exceptions.
Number of Modbus exceptions detected by the remote device since its last restart, clear
counters operation, or power up. It comprises also the error detected in broadcast mes-
sages even if an exception message is not returned in this case.
Exception responses are described and listed in "MODBUS Application Protocol Specific-
ation" document.
Number of messages received (including slave addresses).
Number of messages addressed to the remote device, including broadcast messages,
that the remote device has processed since its last restart, clearing of the diagnostic
counters, or power up.
Number of messages without response.
Number of messages received by the remote device for which it returned no response
(neither a normal response nor an exception response), since its last restart, clear counters
operation, or power up (number of broadcast messages received).
Number of messages answered with NAK.
Number of messages addressed to the remote device for which it returned a Negative
Acknowledge (NAK) exception response, since its last restart, clearing of the diagnostic
counters, or power up. Exception responses are described and listed in "MODBUS Applic-
ation Protocol Specification" document.
Quantity of messages addressed to the remote device for which it returned a Slave Device
Busy exception response, since its last restart, clear counters operation, or power up.
Exception responses are described and listed in "MODBUS Application Protocol Specific-
ation" document.
Number of messages with data loss error.
Quantity of messages addressed to the remote device that it could not handle due to a
character overrun condition, since its last restart, clearing of the diagnostic counters, or
power up. A character overrun is caused by data characters arriving at the port faster
than they can be stored, or by the loss of a character due to a hardware fault.
Number of parity errors
Value and description
Modbus interface of channel 1 is used.
Modbus interface of channel 2 is used.
Corrective action
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