Siemens 6ES7157-1AA00-0AB0 ET 200AL IM 157-1 DP PROFIBUS Interface Module

The Siemens 6ES7157-1AA00-0AB0 is the IM 157-1 DP interface module for the SIMATIC ET 200AL distributed I/O line, rated IP65/67 with two M12 B-coded PROFIBUS ports for direct field mounting. It runs from 24 V DC, supports PROFIBUS DP up to 12 Mbit/s, and is rated PL d / Cat. 3 / SIL 2 for safety-related tripping of standard modules.

Technical Specifications

Selection Notes

Two independent load voltage inputs (1L+ and 2L+), each fused to 4 A, let this interface module feed sensor and actuator power separately from the station logic supply, so a short on the field wiring does not take down the head module. Direct data exchange (slave-to-slave communication) lets other ET 200AL stations read this one's inputs without routing through the DP master, useful for local interlocks. Safety-related tripping to PL d / Cat. 3 / SIL 2 (from FS01) means a hardwired safety chain can trip standard I/O modules on this station without a separate F-module, an option worth checking against the specific safety function before design-in.

Applications

PROFIBUS DP head module for SIMATIC ET 200AL field-mounted I/O stations in IP65/67 environments outside a control cabinet, including installations that use a hardwired safety trip through standard modules.