Configuring Communication Ports; P770 Serial Protocols - Siemens milltronics BW500 Instruction Manual

Configuring Communication Ports

The BW500 communications ports are setup by a series of parameters (P770 – P789)
which are indexed by port.
The communication parameters are indexed to the following:
Port
1
2
3
f
indicates the factory setting.
Changes to these parameters are not effected until the power to the unit is
Note:
turned off and then back on.

P770 Serial protocols

The communications protocol used between the BW500 and other devices for the
selected port, ports 1 to 3 (P770-01 to –03).
The BW500 supports Siemens Milltronics' proprietary "Dolphin" data format plus the
internationally recognized Modbus standard in both ASCII and RTU formats. It also
supports direct connection of a printer.
The Siemens Milltronics protocol is compatible with the Dolphin Plus configuration
program. See the Siemens web site for information on this PC product
(http://www.siemens.com/processautomation).
The Modbus protocol is an open standard developed by AEG Schneider Automation Inc.
Specifications are available from their web site (http://www.modicon.com/).
Other protocols are available with optional SmartLinx ® cards.
Values
0 communications disabled
1 Siemens Milltronics "Dolphin" protocol
2 Modbus ASCII slave serial protocol
3 Modbus RTU slave serial protocol
4 printer
BW500 must be in RUN mode to allow for the print operation.
Note:
Page 78
Description
RS-232, Terminals 31 to 33
RS-485, terminals 41 to 45
RS-232, RJ-11 modular telephone
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Milltronics BW500 – INSTRUCTION MANUAL
-01 and -02
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-03
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