Commissioning and Diagnostics
5-10
ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
Function: Direct communication between basic modules
In STEP 7 V5.0 and later, you can configure direct communication for PROFIBUS
nodes. The following basic modules can participate in direct communication as the
sender (publisher):
BM 141 DI 8DC 24V, 6ES7 141-1BF01-0XB0, from product version 08
6ES7 141-1BF11-0XB0, from product version 01
6ES7 141-1BF12-0XB0, from product version 01
BM 141 DI 8DC 24V
ECOFAST, 6ES7 141-1BF00-0AB0, from product version 01
6ES7 141-1BF01-0AB0, from product version 01
BM 141 DI 8DC 24V 6ES7 141-1BF40-0AB0, from product version 01
ECOFAST DIAG,
BM 142 DO 4DC 24V/2A, 6ES7 142-1BD11-0XB0, from product version 08
6ES7 142-1BD21-0XB0, from product version 01
6ES7 142-1BD22-0XB0, from product version 01
BM 143-DESINA FO, 6ES7 143-1BF00-0XB0, from product version 01
BM 143-DESINA RS485, 6ES7 143-1BF00-0AB0, from product version 01
You will find a detailed description of direct communication in the STEP 7 Online
Help.
Requirements for commissioning
Table 5-5 Requirements for commissioning the DP slave
Presumed activity See ...
1. DP slave installed Section 3.1
2. PROFIBUS address set on DP slave Section 3.3
3. If the bus signals are transferred using copper conductors
and the DP slave is at the end of the segment, the
terminating resistor must be activated on the DP slave:
– In the case of the BM 141, BM 142 and BM 147/CPU by
bringing it into the circuit
– In the case of the BM 141-ECOFAST and
BM 143-DESINA RS485 by mounting the terminating
resistor on the right-hand DESINA connector
Section 3.4
4. DP slave wired Section 4.4
5. DP slave configured Online Help/configuration
software manual
6. Supply voltage turned on for DP master Manual for DP master
7. DP master set to RUN mode Manual for DP master
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