Function Code 16 Preset 4X Registers (Write Only); Figure 5-37. Modbus Write Command 16 (10 Hex) Allowing Writes To The Tpu2000/2000R - ABB TPU2000 Technical Manual

TPU2000/2000R Modbus/Modbus Plus/ Modbus TCP/IP Automation Guide
•
Trip Initiation
•
Enable/Disable of Protective Functions
• Clearing of Event Counters
•
Enable/Disable of Supervisory Functions
• Reset of Targets
•
Clear of Seal In's

Function Code 16 Preset 4X Registers (Write Only)

Figure 5-37 illustrates the Modbus command structure writing multiple registers.

Figure 5-37. Modbus Write Command 16 (10 Hex) Allowing Writes to the TPU2000/2000R

The write multiple register command is convenient for writing the following control blocks:
Control Block 1 allows for:
•
Initiation of Relay Trip
•
Initiation of Input Functions
Control Block 2 allows for:
•
Forcing of Physical Input Logical Statuses
Control Block 3 allows for:
• Force of Physical Output Points
Control Block 4 allows for:
• Force Logical Input Bits 1 to 32
Control Block 5 allows for:
• Setting and Resetting of Protective Functions and Resetting of Alarms
Control Block 6 allows for:
• Forcing of Physical Output Points for a limited duration of time
Whenever a write occurs to the TPU2000/2000R:
•
The TPU2000/2000R receives the command:
•
Command Interpreted in 1 quarter cycle.
• Relay Protection Occurs.
•
Command acts on the device.
Function 16 Preset Multiple Registers
Slave Funct. Start Start
SOM
Addr. Code Addr Addr
10 HI LO
Byte 1 ...2........3.......4.......5......6........7.... ..8.........9............X...
Command
Allows 125 Regs.
Max.
SOM
SOM = Start of Message
EOM = End of Message
Register Hi Byte
Regs Regs # * Data Data
Writ Writ Bytes
HI LO Writ. HI LO
Modbus Host
Slave Funct. Start Start Regs
Addr. Code Addr Addr Sent
10 HI LO
MSB
MSB LSB
151413121110 9 8 7 6 5 4 3 2 1 0
Error
EOM
Check
Modbus Slave Addr =1
E C
Read from
4X Mapping
Regs Error
EOM
Sent Check
HI LO
LSB
114