WESTERSTRAND
Document: 9539en14.doc
Author: PM
Date: 2018-08-15
Page: 4 av 5
WESTERSTRAND URFABRIK AB
Box 133
Tel. 0506 48000
Internet:: http://www.westerstrand.se
545 23 TÖREBODA
Fax. 0506 48051
E-mail:
Serial ports
The Master Clock is equipped with two serial ports, one RS232 and one RS422/485.
Both ports can be used either as input or output for serial time messages.
If programmed as output the port can be used to send out time to external equipment such as computers etc.
If programmed as input the port can be used to synchronise the master clock with an external time source pro-
vided with RS232 or RS485 output. The purpose of this is to achieve higher accuracy.
Protocol, data format and baud rate is selectable for respective serial port.
Serial output
Baud rate (selectable):
300, 600, 1200, 2400, 4800, 9600, 19200 baud.
Data format (selectable)
7N1, 7N2, 7O1, 7O2, 7E1, 7E2, 8N1, 8N2, 8O1, 8O2, 8E1, 8E2
No. of data bits:
7 or 8.
Type of parity:
None, odd or even.
No. of stop bits:
1 or 2.
Selectable data format:
Available protocols
- ZDA Time string, NMEA 0183
- Westerstrand protocol no. 2, 3, 5, 7 etc.
(Automatic time message protocols)
Type of time (selectable):
UTC, LT
Serial input
Baud rate:
4800 baud.
Data format:
8N1
Type of protocol:
ZDA Time string, NMEA 0183
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