Lenze PROFIBUS Controller-based Automation - Manual (Page 22)

5 Technical data
5.1 Technical data of the MC-PBM / MC-PBS communication card
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Lenze · Controller-based Automation · PROFIBUS® Communication Manual · DMS 4.3 EN · 04/2014 · TD17
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5 Technical data
5.1 Technical data of the MC-PBM / MC-PBS communication card
I/O data of MC-PBM (master)
In the »PLC Designer« control configuration, a maximum of 125 PROFIBUS slaves (devices) can be
appended below a PROFIBUS master.
For each slave, a maximum of 244 input bytes and 244 output bytes, respectively, can be
transferred. Their data type is irrelevant in this context.
I/O data of MC-PBS (slave)
In the »PLC Designer« control configuration, a maximum of 24 I/O modules can be appended below
a PROFIBUS slave. It is irrelevant whether the modules in question are input or output modules, or
of which data type (BYTE, WORD) they are.
Area Values
Protocol PROFIBUS-DP (V0, V1), ISO 7498
Communication medium RS485
Network topology • Line terminated on both sides (without repeater)
• Tree (with repeaters)
Type within the network • MC-PBM: Master
• MC-PBS: Slave
Baud rate See " Bus cable length " ( 24)
Bus length
Connection
9-pin Sub-D socket
Area Values
Number of DP-V0/DP-V1 slaves supported Max. 125
Cyclic output data Max. 3584 bytes
(status information is treated separately)
Total cyclic input data Max. 3584 bytes
Total cyclic output data Max. 3584 bytes
Cyclic input data per slave Max. 244 bytes/slave
Cyclic output data per slave Max. 244 bytes/slave
Configuration data Max. 244 bytes/slave
Area Values
Cyclic input data Max. 244 bytes
Cyclic output data Max. 244 bytes
Acyclic reading/writing Max. 240 bytes
Configuration data Max. 244 bytes
Application-specific parameter data 237 bytes