Functional Principle Independent Of Protocol - Bosch Rexroth IndraDrive MPH-02 Functional Description

10-76
Handling, Diagnostic and Service Functions

Functional Principle Independent of Protocol

Determining the Protocol
RS232 Mode
RS485 Mode
Basic State After Applying the Control Voltage
After the control voltage has been applied the serial communication in the
drive is in the "passive mode". In the passive mode communication is
impossible.
In order to establish the serial communication with the drive it is
necessary to determine the kind of communication (protocol) by
• a CHANGE DRIVE command (in the case of ASCII protocol)
- or -
• a valid SIS telegram (in the case of SIS protocol).
Setting the Drive Address
The drive address of the serial interface is set by writing data to the
P-0-4022, Drive address of serial interface. parameter.
This can be done, for example, by means of the standard control panel or
the "DriveTop" commissioning tool.
Exception:
If the value "256" (default value) was entered in parameter P-0-4022, the
device address set in parameter P-0-4025, Drive address of master
communication is used for serial communication.
In this mode it is not obligatory to set the drive address because only
one node is connected (peer-to-peer connection).
Note: When communicating via the SIS protocol the address 128 is
provided for peer-to-peer communication. Independent of the
setting in parameter P-0-4022, the address 128 is always
valid.
In the case of communication via RS485 bus, it is obligatory to set the
drive address because each bus node is addressed via a specific bus
address.
Note: In order to avoid access conflicts each drive address may be
assigned only once.
MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P