Diagnostic Status (2 Registers Defined); Figure 5-33. Application Example: Fetch Relay Status From The Tpu2000/2000R; Figure 5-34. Application Example: Returned Relay Response - ABB TPU2000 Technical Manual

TPU2000/2000R Modbus/Modbus Plus/ Modbus TCP/IP Automation Guide

Figure 5-33. Application Example: Fetch Relay Status from the TPU2000/2000R

Figure 5-34. Application Example: Returned Relay Response

Since the last read of the status register, a new fault record and event record has been input within the
TPU2000/2000R buffers.

Diagnostic Status (2 Registers Defined)

Bits 0, 1, or 2 are updated continuously. The TPU2000/2000R performs diagnostics:
•
Upon power-up of the unit.
•
Continuously thereafter on a periodic basis. A variety of TPU2000/2000R diagnostics are performed
and completed in 20 minute intervals.
If a "SELF TEST" failure is reported in Register 40129 Bit 0 or discrete output 0007, access of Register 40129
shall enable the user to access the cause. Diagnostic Status is reported via MMI front panel or Network port
access.
Bit 3 Reflects the OR'ing of all EEPROM Settings stored. (ie if one fails [bit 0, 1, or 2 is set to a 1]) this is set.
Within the TPU2000/2000R are three relay parameter copies. Upon power-up, the copies are compared to each
other. If there is a miscompute, a TPU2000/2000R PROM Failure is logged. Bit 3 is set when the unit failures to
successfully read from all three copies of the Stored Parameters.
Bits 0 through 3 are cleared only at a unit Power On Reset, or a unit TPU2000/2000R reset through the front
panel.
Obtain the Relay Flag from theTPU 2000R ( Register 40129)
Host Sends : 01 03 00 80 00 01 -
Addr = 01
Function = 03
Address = 40129 ( which is 128 in hex = 0080)
Amount of Data Requested = 1 Register
Relay Responds: 01 03 02 08 2C -
Addr = 01
Function = 03
Data Bytes Received = 2
Data Received = 08 2C
Obtain the Relay Diagnostic Status Flag from the TPU 2000R ( Register 40129)
Data Received = 08 2C
MSB = 08= 0000 1000 Binary
Bits 10 - 15 = 0000 10
New Fault Recorded = 0
New Peak Demand Value Recorded = 0
New Operation Recorded = 0
Modbus Slave Addr =1
E C
Read from
4X Mapping
- = LRC or CRC Code
Modbus Slave Addr =1
E C
Read from
4X Mapping
LSB = 2C = 0010 1100 Binary
Control Power Cycled = 0
Alt 2 Settings Active =
Alt 1 Settings Active = 0
Remote Edit Disabled = 1
Local Settings Change= 1
Input Changed = 0
Self Test = 0
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