Specifications

Appendix: Host Interface
Appendix: Host InterfaceAppendix: Host Interface
Appendix: Host Interface
Communication Parameters
Communication ParametersCommunication Parameters
Communication Parameters
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Appendix: Host Interface
Appendix: Host InterfaceAppendix: Host Interface
Appendix: Host Interface
The METTLER TOLEDO PS shipping scale can function as a peripheral
device to a host computer. In host mode you can:
• Calibrate the scale
• Configure setup parameters
• Request and receive weight data when the scale is in a stable state
• Request and receive the scale’s status when the scale is in an unstable or
invalid state
• Zero the scale and/or switch units (depending on setup)
This section presents information and instructions on how to use the PS in
host mode.
Communication
CommunicationCommunication
Communication
Parameters
ParametersParameters
Parameters
Data is transmitted and received by the scale through an RS-232 serial port
connection. The following communication parameters are supported:
• Baud Rate (300, 1200, 2400, 4800, 9600, 19200)
• Parity (no, even, odd, mark, space)
• ASCII bit string (7 or 8)
• Stop bits (1, 2)
• The scale only responds to commands, continuous data output is not
available.
Protocols
ProtocolsProtocols
Protocols
The scale can be programmed to respond to a selected “menu” of defined
protocols. The host sends requests to the scale in the form of ASCII data and
control characters as determined by the selected protocol. The scale responds
to the host with a string of ASCII characters. ASCII characters and their
binary conversions are listed in the following table:
The scale does not reply to host
weight commands if it is in setup
mode or if the scale cannot capture
zero on power-up.