Metalfab SEW Eurodrive MOVIMOT MM..C - Manual (Page 122)

122
Operating Instructions – MOVIMOT® MM03C - MM3XC
9
Function with RS-485 master
Startup with Communications Interface / Fieldbus
9.3 Function with RS-485 master
• The controller (e.g. PLC) is master, MOVIMOT
®
is slave.
• 1 start bit, 1 stop bit and 1 parity bit (even parity) are used.
• The transmission adheres to SEW MOVILINK
®
protocol (see the section
MOVILINK
®
Unit Profile with a Fixed Transmission Rate of 9,600 Baud).
Message struc-
ture
Idle = Start pause at least 3.44 ms
SD1 = Start delimiter (start character) 1: Master
→
MOVIMOT: 02
hex
SD2 = Start delimiter (start character) 2: MOVIMOT
→
Master: 1D
hex
ADR = Address 1–15
Group address 101–115
254 = Point-to-point
255 = Broadcast
TYPE = User data type
PDU = User data
BCC = Block check character: XOR of all bytes
02754AEN
• In the 'cyclical' type, MOVIMOT
®
expects the next bus activity (master protocol) with-
in one second at most. If this bus activity is not detected, MOVIMOT
®
automatically
decelerates to a standstill (timeout monitoring).
• There is no timeout monitoring for the 'acyclical' type.
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