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A.7. Actual Data (3X References & 4X References)
Actual data includes measured values such as voltage and current. It includes both logic and statistical information.
All parameters are word (two bytes) parameters. The protocol supports only reading of these parameters.
Parameter # is "1 based". The actual parameter address is 1 lower than parameter #. For example the address of
parameter #1 is 0 (30000).
The parameters have double mapping, at the following 3x & 4x references:
Note: Function 4 should be used to read 3x references and function 3 to read 4x references.
Parameter
Logic Status
Motor Current
Line Voltage
Phase_Sequence
Hardwired inputs
Dip_Switch
Reserved
Frequency
Thermistor_Resistance
Reserved
Logic Status at Power Fail
Elapsed Run Time
Number of Starts
Last_Start_Period
Last_Start_Peak_I
Reserved
Total_Trips
• Appendix A - MODBUS RTU Protocol
89
# (3x) # (4x)
1
257
2
258
3
259
4
260
5
261
6
262
7..9
264..265
10
266
11
267
12..16 268..272
17
273
18
274
19
275
20
276
21
277
22
278
23
279
Comment
Logic status of ASTAT-XT. 1 indicates:
d15: ASTAT-XT Tripped.
d14: Motor Stopped.
d13: Motor in Soft Stop Process.
d12: Motor in Start Process.
d11: Motor is Running.
d10: Dual_Adjust On.
d9: Motor is running with Energy Save On.
d8: Motor is running at Slow Speed forward.
d7: Motor is running at Slow Speed reverse.
d6: Reserved
d5..d0: Reserved.
Current, % Im
Line voltage, volts
1: Correct Phase seq. 0 : Wrong Phase Seq.
Discrete Hardwired control inputs:
d15..d8: Reserved.
d7: External fault.
d6: Reserved.
d5: Reserved.
d4: D.Adj / S.Spd / Rst (Programmable) Input.
d3: E.Save / Rvrs / Rst (Programmable) Input.
d2: Start Input.
d1: Soft Stop Input.
d0: Stop Input.
d15..d8: Reserved.
d7: Prevent Setting Lock
d6: Expanded Setting Ranges
d5: Language Selection.
d4: Language Selection.
d3: Reserved - Must be set to Off.
d2: Generator Starting - Set to Off.
d1: Reserved
d0: Min (OFF) / Max display pages- (left most)
Frequency [Hz]
Thermistor resistance, tenth Kohm.
Logic Status at Control Pwr Supply turn OFF.
Total Hours of Running Motor.
Total Number Of Starts
Duration of Last Start, Seconds.
Peak Current During Last Starting process
Total Number Of Trips
- (right-most)
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