CSIII (Model 4310B) User’s Guide
DS50003057A-page 40
2021 Microchip Technology Inc.
B.3
CESIUM COMMAND REFERENCE
Commands are sent to the CsIII over the RS-232 port. The command set is backwards
compatible with Microchip instruments based on the 4201A/5045 architecture (4040,
4065). Several new commands support the new capabilities of the CsIII. General for
-
mat is as follows:
<STX>_<Function Code>_<IDENT>_<DATA><ETX>
All entries in the data field are left justified, and the remainder (if any) of the data field
must be filled in, to round it up to 9 characters in length. All commands sent to the CsIII
return a response of the form
<STX><Text of response><ETX>
Table B-3 lists all commands recognized by the CsIII.
If the CsIII receives a malformed or non-compliant command or if the command
addresses an optional feature that is not currently installed (that is commands which
address features particular to other Microchip Cesium instruments), the CsIII performs
no action and echoes the command back to the user with an additional space character
and question mark character appended prior to the closing <ETX> character.
For example:
Transmission:
<STX>C05_00000_1900,8,N,1<ETX>
(error in Baud rate data field)
CsIII Response:
<STX>C05_00000_1900,8,N,1 ?<ETX>
The following table defines the CsIII interface.
TABLE B-2:
CESIUM COMMAND REFERENCE DESCRIPTION
Element
Description
STX
002
—
Space character
<Function Code>
Function code, see table
<IDENT>
5 character unit identification number
[<DATA>]
Data: this string is of variable length
ETX
003
WARNING
Many of the function codes listed in the following tables are labeled Reserved for Fac
-
tory Use and are intended only for factory calibration and test of the CsIII instrument.
Issuance of commands labeled Reserved for Factory Use may render the CsIII inopera
-
ble and void the warranty.
Summary of Contents for 4310B
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