Modbus TCP/IP to Siemens Industrial Ethernet gateway
PRODUCT POSITION
The PLX31-MBTCP-SIE exchanges data between Modbus TCP/IP devices and Siemens controllers over Industrial Ethernet. It is suited to projects that must connect S7-200, S7-300, S7-400, S7-1200 or S7-1500 systems with Modbus TCP controllers, HMIs, meters, analyzers and other Ethernet devices without rewriting both sides around a common protocol.
EXACT-MATCH QUOTATION
Send the full part number, quantity, condition requirement and destination.
Choose PLX31-MBTCP-SIE when one side is Modbus TCP/IP and the other uses Siemens Industrial Ethernet data exchange. Define client/server roles, S7 data areas, register mapping, scan priorities, byte order, connection count and update-rate expectations before commissioning.
SERIES / SYSTEM RELATIONSHIP
Choose by Installed Role, Not Appearance
IDENTITY
RELATIONSHIP
SELECTION POINT
PLX31-MBTCP-SIE
Modbus TCP ↔ Siemens Ethernet
◆ THIS MODEL
PLX31-EIP-MBTCP
EtherNet/IP ↔ Modbus TCP
Different controller protocol
PLX31-MBTCP-MBS
Modbus TCP ↔ Modbus serial
Adds serial-side role
PLX32 variants
Two independent Ethernet networks
Use where segmentation is required
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Protocol conversion avoids PLC-side custom messaging in many projects.
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Configurable command priorities help control scan behavior.
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Per-command status assists commissioning and fault isolation.
Contact us within seven days if a concern appears after receipt.
Keep returned items in original condition and state the reason for review.
Return-related shipping costs are the buyer’s responsibility.
PURCHASING FAQ
Checks That Protect the Installation
PLX31-MBTCP-SIE: Will PLX31-MBTCP-SIE communicate with an S7-1500?
Yes. The gateway supports S7-1500 along with S7-1200, S7-400, S7-300 and S7-200 families; PLC access settings must permit the required data exchange.
PLX31-MBTCP-SIE: How much data can PLX31-MBTCP-SIE exchange?
The gateway provides up to 4000 16-bit registers. Map only the required data and plan update rates around command count and network loading.
PLX31-MBTCP-SIE: What should be confirmed before buying PLX31-MBTCP-SIE?
Confirm both protocols, client/server roles, Siemens data areas, connection count, firmware needs, power supply and environmental rating.
PLX31-MBTCP-SIE: Can PLX31-MBTCP-SIE replace PLX31-EIP-MBTCP?
No. Their non-Modbus sides use different protocols. Select the exact gateway according to the Siemens or EtherNet/IP controller interface.
PLX31-MBTCP-SIE: How should PLX31-MBTCP-SIE be tested after setup?
Verify each command status, address mapping, byte and word order, timeout recovery, data freshness and behavior after either network is disconnected and restored.