Protective Functions; Modbus Rtu Mode - AUMA AUMATIC AC 01.2 Manual

Actuator controls
AC 01.2/ACExC 01.2 Modbus RTU
2.6.

Protective functions

2.7.

Modbus RTU mode

Modbus RTU protocol
Parity check for each telegram byte
CRC check for each telegram
Watchdog for AUMA actuators with adjustable failure behaviour.
Request-response cycle monitoring with configurable timer interval at the
master.
Data format for a byte
Coding system:
8 bit binary, hexadecimal 0-9, A-F
hexadecimal characters contained in each 8 bit field of the telegram
Bits per byte:
1 start bit
8 data bits; least significant bit sent first
1 bit for even/odd parity, no bit for no parity
1 stop bit if parity is used, 1 or 2 stop bits if no parity is used.
General information about Modbus
7