Communication
130
7 Communication
7.1 Modbus RTU Serial Communications
All VMX-Synergy Plus
TM
soft starts support Modbus RTU as standard. The RS-485 serial
communications are accessible from the RJ45 connector (see below).
Note: ASCII and RTU transmission modes are defined in the Modbus protocol specification.
VMX-Synergy Plus
TM
uses
only the RTU mode
for the message transmission.
For Modbus RTU parameter tables see MAN-VMX-SGY-MOD
7.1.1 Modbus RTU Connection
Dual RJ45 Socket Location and Pinout
Single VMX-Synergy Plus
TM
to PLC
Pin
Function
1
Not Connected
2
Not Connected
3
Not Connected
4
TXD1-B-OUT
5
TXD0-A-OUT
6
Not Connected
7
Not Connected
8
0V
P1
P8
P1
P8
Either of the RJ45 sockets