Product Overview
Technical Summary
| Product type | CM PtP RS 422 / 485 BA |
|---|---|
| Serial connection | RS422, RS485, Freeport, 3964 (R), USS |
| Maximum transmission rate | 19.2 kbit/s |
| Telegram buffer memory | 2 kbyte |
| Buffered telegrams | 255 |
| Backplane bus current consumption | 43 mA; From the backplane bus |
| Power consumption | 0.65 W from the backplane bus |
| Mounting | S7-1500 mounting rail |
Key Features
Supports RS422, RS485, Freeport, 3964 (R) and USS.
Maximum transmission rate is 19.2 kbit/s for RS 485 and RS 422.
Maximum cable length is 1 200 m for RS 485 and RS 422.
Configurable/integrated with STEP 7 TIA Portal from V12 and STEP 7 from V5.5 SP2 with GSD file.
Rail mounting on an S7-1500 mounting rail; dimensions are 35 mm wide, 147 mm high and 127 mm deep.
Product cancellation.
Frequently Asked Questions
What is the exact Siemens line item?
The exact line item is 6ES7540-1AB00-0AA0, a CM PtP RS 422 / 485 BA communication module.
Which serial interfaces and protocols does it support?
It supports RS422, RS485, Freeport, 3964 (R) and USS serial communication.
What are the maximum serial transmission rate and cable length?
The maximum transmission rate is 19.2 kbit/s, and the maximum cable length is 1 200 m for both RS 485 and RS 422.
How is the module mounted?
It uses rail mounting on an S7-1500 mounting rail.
