Quick answer: The Siemens ET 200SP AQ 4×U/I ST (order code 6ES7135-6HD01-0BA1) is a Analog Output for the SIMATIC ET 200SP distributed I/O system. 16-bit resolution, ±10V / 0-20mA output for proportional valves, drives.
| Identification | |
| Module Name | AQ 4×U/I ST |
| Order Code (MLFB) | 6ES7135-6HD01-0BA1 |
| Module Type | Analog Output |
| I/O Characteristics | |
| Channel Count | 4 channels |
| Signal Type | U/I |
| Voltage / Range | ±10V / 0-20mA |
| Description | 16-bit resolution, ±10V / 0-20mA output for proportional valves, drives. |
| General | |
| System Compatibility | SIMATIC ET 200SP (PROFINET / PROFIBUS station) |
| Compatible Controllers | S7-1500, S7-1200, S7-300/400 (via IM interface module) |
| Operating Temperature | -30°C to +60°C |
| Supply Voltage | 24V DC (via ET 200SP backplane / PM module) |
| Protection Rating | IP20 |