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Proton Products SL mini and SLR mini Series Speed and Length Gauges Instruction Manual - issue 1s
RS-232 COMMUNICATIONS
This RS-232 interface is fitted as standard. It operates independently of the other communications
interfaces and may be accessed at the same time as them.
If the RS-βγβ interface “Mode” is set to “ZM400 Printer”, then a Zebra ZM400 printer may be
connected to the port to print reel report tickets when triggered by the “End of Reel” logic input.
RS-232 interface
The RS-232 interface may be accessed through the following pins:
Connector type: DB25 female (socket)
The above table also shows the configuration of a cable for connection to a personal computer (PC)
type DB9 serial port.
The maximum baud rate depends on the cable capacitance and length. For low-cost overall shielded
cable with total capacitance of shield to core-plus-core to core of 300pF per metre, the maximum
recommended baud rates are as follows: