Siemens sitrans LU01 - Manual (Page 72)

Page 66 SITRANS LU01 – INSTRUCTION MANUAL 7ML19985BE02
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Communications (P772)
The SITRANS LU01 communication ports are configured by a series of parameters that
are indexed by port.
Communication parameters are indexed to these communication ports, unless otherwise
noted:
P772 Baud Rate
The communication rate with the master device.
This specifies the rate of communication in baud. Any value may be entered but only the
values shown above are supported. The baud rate should reflect the speed of the
connected hardware and protocol used.
SmartLinx Hardware Testing
These parameters are used to test and debug a SmartLinx card (if installed).
P790 Hardware Error
The results of ongoing hardware tests in the communications circuitry.
If any test does not meet the PASS requirements, communication halts and tests are
repeated until PASS requirements are met. Communication then resumes. If FAIL or ERR1
is displayed in P790 (Hardware Error), go to P791 (Bus Error) for information about the
error.
Port Description
1 RS-232 port (RJ-11 modular telephone)
2 RS 485 port on terminal block
Primary Index Communications Port
Values
4.8 * 4800 baud
9.6 9600 baud
19.2 19,200 baud
115.2 115,200 baud
Values
PASS * No errors
FAIL faulty SmartLinx module or SITRANS LU01
ERR1 unknown protocol; upgrade the LU01 software
Related
• P791 Bus Error
• P792 Bus Error Count