STRING This is an individually formatted string, usually (but not always )
read-only. See below for details.
SY: System request
This reports upon the identity of the instrument. This may only be data requested the
returned data format is as follows.
aabbbbbb0ccde0000ff0000
aa: device type DM for Digital Meter
bbbbbb: Issue date of software
cc: Variant type; U=01, C=02; A=03
d: Contents of option slot 1;
Nothing fitted=0;
Single Relay board=2;
Dual Relay board=3;
Volt o/p=4;
RTX board=5
e: Contents of option slot 2; Format as above.
ff: Number of channels; 01 always
APPENDIX E
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