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All the VS PLC main units are equipped with a built-in mini USB port to be the programming interface which is for
connecting and communicating with programming devices.
Also, all the VS PLC main units are also equipped with built-in the CP1 which is a RS-485 multi-functional
communication port, supporting various types of communication application and connecting various external peripheral
equipments to accomplish control objectives collaboratively.
If more communication ports are needed, can be achieved by installing communication expansion cards to expand the
number of communication ports. Moreover, all of the expanded communication ports are multi-functional and can be
applied to a variety of uses.
The VS Series PLC Main Unit not only has a built-in CP1 communication port, but also the EC1 Expansion Card Socket
is available to install a communication expansion card. Thus, by the EC1 socket, the VS1 could get the CP2; the VS2
and VSM could have the CP2 and CP3. Moreover, the VS3 can use its EC1 and EC3 to expand CP2~CP5. However, if
the CP5 at a VS3 PLC is required, its EC2 socket may install a VS-3AV-EC card or not to use; any DIO or SF Card at
EC2 will cause the CP5 at EC3 ineffective.
7-2 Structure of Communication System
Main Specification
Model Name Item
VS-485A-EC
VS-485-EC
VS-D232-EC
VS-D 485A-EC
VS-D 485-EC
RS-485 Comm. Expansion Card: One non-isolated RS-485 port with TX / RX indicators; dist. 50m Max.
RS-485 Comm. Expansion Card: One isolated RS-485 port with TX / RX indicators; dist. 1000m Max.
RS-485 Comm. Expansion Card: Dual non-isolated RS-485 ports with TX / RX indicators; dist. 50m Max.
RS-485 Comm. Expansion Card: Dual isolated RS-485 ports with TX / RX indicators; dist. 1000m Max.
RS-232C Comm. Expansion Card: Dual non-isolated RS-232 ports with TX / RX indicators;
dist. 15m Max.; wiring by the RX / TX / SG terminals
Comm.
Expansion
Card
VS-D52A-EC
VS-ENET-EC
RS-485 + RS-232C Comm. Expansion Card: One isolated RS-485 port (1000m) &
one non-isolated RS-232C port (15m), both with TX / RX indicators and wiring by terminals
Ethernet + RS-485 Communication Expansion Card: One Ethernet port (with additional non-isolated
RS-485, dist. 50m) & one non-isolated RS-485 port (dist. 50m), both with TX / RX indicators
A communication port at CP card is not related to the working area of DIO expansion or SF card, to operate the port is
directly by the installed setting and program.
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