Siemens SIMATIC S7-1200 SM 1278 4xIO-Link Master

Signal module for connecting up to four IO-Link devices to SIMATIC S7-1200, also available as SIPLUS version.

Key features

4 IO-Link ports (IO-Link master)
Connects intelligent sensors and actuators
Standard S7-1200 signal-module format
SIPLUS versions with conformal coating or -25 ... +70 °C

Specifications

Brand	Siemens
Product line	SIMATIC
Series	SIMATIC S7-1200
Module	SM 1278
Ports	4x IO-Link
Terminals	Tin-coated, 7-pin screw or push-in
Engineering	STEP 7 (TIA Portal)
Source	Siemens Catalog ST 70 · 2026, p. 273-276

6ES7278-4BD32-0XB0		Version: Standard
6AG1278-4BD32-4XB0		Version: SIPLUS, conformal coating
6AG1278-4BD32-2XB0		Version: SIPLUS, -25 ... +70 °C

PLC I/O ModulesSiemens

3 product codes available in this family

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Siemens SIMATIC S7-1200 SM 1278 4xIO-Link Master

Brand Siemens·PLC I/O Modules

Available part numbers (3)

6ES7278-4BD32-0XB0, 6AG1278-4BD32-4XB0, 6AG1278-4BD32-2XB0

How to order

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