----- Supply network analyzer CVMk and CVMk-ITF ------ Page Nº 63
MODBUS SELECTION
There are two ways for the change of the protocol (CIRBUS or MODBUS ) :
a.- It is possible to access to a second MENU of SET-UP that allows the
configuration of the CVMk : CIRBUS or MODBUS
(*) see the APPENDIX B.
b.- With instructions via RS.
b.1.- When the device is on CIRBUS , for changing to MODBUS via RS, it is
done sending the command MBS.
CIRBUS -> MODBUS $PPMBSch ( Lf ) ASCII
PP Peripheral number ( CVMk )
MBS Instruction to change from CIRBUS to MODBUS
ch CHECK SUM
b.2.- When the device is on MODBUS , for changing to CIRBUS via RS, it is
necesary to use the FUNCTION 6 ( Writing of 1 Word ) .
MODBUS -> CIRBUS PP0600000000CCCC BINARY
PP Peripheral number ( CVMk )
06 Writing function (Only to change).
0000 Writing of 1 Word
0000 Writing register : 0
CCCC CRC
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