Siemens Electronics module 2 Ananlog Output (AO) ET200S 6ES7135-4MB02-0AB0
The Siemens ET 200S system does not have a CPU integrated directly into an analog output module. The CPU is a separate module (like the IM151-8 PN/DP CPU mentioned in a previous query) that communicates with the I/O modules, including analog output modules.

SIMATIC DP Electronics module 2 AO:
- Order Number: 6ES7135-4MB01-0AB0
- Output Channels: 2 AO
- Output Type: +/-20mA; 15 bit+sign, 4.. 20mA; 15 bits
- Resolution: Typically 13 or 15 bits + sign
- Width: 15 mm
Siemens Electronics module 2 AO U High Feature (Voltage Output):
- Order Number: 6ES7135-4LB02-0AB0
- Output Channels: 2
- Output Type: Voltage (e.g., +/-10V, 1-5V)
- Resolution: 15 bits + sign
- Width: 15 mm
SIMATIC DP, Electronics module 2 AO I High Feature (Current Output):
- Order Number: 6ES7135-4GB52-0AB0
- Output Channels: 2
- Output Type: Current (e.g., 0-20mA, 4-20mA)
- Resolution: 15 bits
- Width: 15 mm
SIMATIC DP Electronics module 2 AO Standard (Current Output):
- Order Number: 6ES7135-4GB01-0AB0
- Output Channels: 2
- Output Type: Current (e.g., +/-20mA, 4-20mA)
- Resolution: Typically 13 bits + sign
- Width: 15 mm