Appendix
A.3 MODBUS
SENTRON PAC4200
System Manual, 09/2009, A5E02316180B-02
235
Table A- 8 Modbus offset 205, tab 2: Structure of PMD diagnostics and status
Byte Bit Device status Type Bit mask Value range Access
0 0 No synchronization pulse Status 0x01000000 R
0 1 Device Configuration menu is active Status 0x02000000 R
0 2 Voltage out of range Status 0x04000000 R
0 3 Current out of range Status 0x08000000 R
1 0 Module slot 1 Status 0x00010000 R
1 1 Maximum pulse rate exceeded Status 0x00020000 R
1 2 Module slot 2 Status 0x00040000 R
2 0 Basic configuration changed
1) 2)
Status 0x00000100 R
2 1 Upper or lower limit violation
1) 2)
saving 0x00000200 R
2 2 Maximum pulse rate exceeded
1) 2)
saving 0x00000400 R
2 3 Device has rebooted
1) 2)
saving 0x00000800 R
2 4 Energy counters reset
1) 2)
saving 0x00001000 R
3 0 Bit 0 Slot 1 Parameters changed
2)
saving 0x00000001 R
3 1 Bit 1 Slot 1 IMDATA changed
2)
saving 0x00000002 R
3 2 Bit 2 Slot 1 Firmware update active
2)
saving 0x00000004 R
3 3 Bit 3 Firmware data block available
2)
saving 0x00000008 R
3 4 Bit 4 Bootloader update flag
2)
saving 0x00000010 R
3 5 Bit 5 Slot 2 Parameters changed
2)
saving 0x00000020 R
3 6 Bit 6 Slot 2 IMDATA changed
2)
saving 0x00000040 R
3 7 Bit 7 Slot 2 Firmware update active
2)
saving 0x00000080
0 =
Not active
1 =
active
R
1)
Only these device states are to be acknowledged.
2)
You can use the function codes 0x05 and 0x0F here in addition to the function codes 0x01 and 0x02.
See also
Measured variables without a time stamp with the function codes 0x03 and 0x04 (Page 225)
A.3.5 Measured variables for the load profile with the function codes 0x03 and 0x04
Addressing the measured variables with a time stamp
The current period is the last completed period.
The instantaneous period is the period still in progress and has not yet been completed.
Table A- 9 Measured variables available with a time stamp
Offset Number of
registers
Name Format Unit Value range Access
483 4 Time stamp for the current period Time stamp - - R
489 2 Demand apparent power in the current
period
Float VA - R
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