
Appendix B: CRC-16 Calculation
02/13 Modbus® RTU Serial Communications User Manual 29
A.2 Miscellaneous Register Map
A.2.1 RSX, VPR, VRX, UDC5300 Miscellaneous Register Map
Address
(hex)
Register
(decimal)
Parameter Name Access Notes
0000 40001 Instrument Mode R/W Bit Packed
Indicators:
Bit 0: 1:Diagnostic
Bit 1: 1:Calibration
Bit 2: 1:Maintenance/Offline mode
Bit 3: 1:Program mode
Bit 4: 1:Reset Unit/Force Cold Start
(Write Only)
Bit 5: 1:On-Line/Run mode
Bit 6…15: Unused
0001 40002 Configuration Select W Signed 16 bit integer
0: Clear Configuration
(Preserves Calibration)
0002 40003 Load Recipe or
Program Number
R/W Floating Point
VRX/VPR
Read: Active program number
Write: Load program (write is allowed
only when SPP is in Ready or At End)
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