Modbus Slave Connection To The Vp-2117 - ICP DAS USA VP-2117 Getting Started

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Modbus Slave Connection to the VP-2117

VP-2117 can use COM1 (RS-232) and one of COM2 (RS-485), COM3 (RS-232/485)
to connect. The COM1/2 of the VP-2117 PAC supports Modbus RTU Slave protocol
by default. They can be linked by ISaGRAF Workbench or by HMI devices or by
SCADA software as diagram below:
The Ethernet Port of the VP-2117 PAC supports Modbus TCP/IP Slave protocol.
They can be linked by ISaGRAF Workbench or by HMI devices or by SCADA
software. As diagram below:
The Modbus TCP/IP protocol‟s Ethernet Port No. is fixed as 502. Up to 6 PCs can
link to one VP-2117 throughout Ethernet Port. Another PC or HMI can link to COM1:
RS-232 Port or one of COM2: RS-485, COM3: RS-232/485 (Modbus RTU Slave
protocol) of the PAC. Therefore the maximum number of clients can be linked is 8.
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VP-2117 Getting Started, Apr. 2010, V1.0