Modbus Plus Port Configuration [Com 3 On Selected Units] (Tpu2000R Only) - ABB TPU2000 Technical Manual

NOTE 1: If the DUAL RS485 Board (Option 8) is selected, the query shall be modified as: RS485 – 1
Baud. If the hardware does not support COM 3, this query shall be omitted.
NOTE 2: If the DUAL RS485 Board (Option 8) is selected, the query shall be modified as RS485 – 1
Frame. If the hardware does not support COM 3, this query shall be omitted.
NOTE 3: If the DUAL RS485 Board (Option 8) is selected, the query shall be modified to RS485 – 2
Baud.
NOTE 4: If the DUAL RS485 Board (Option 8) is selected, the query shall be modified to RS485 – 2
Frame.
Note that Ethernet parameterization cannot be accomplished via the front panel interface and can only be
accomplished via WIN ECP.

Modbus Plus Port Configuration [COM 3 on Selected Units] (TPU2000R Only)

Only the TPU2000R supports Modbus Plus. The TPU2000R recognizes if the communication card supports
Modbus Plus. Only the Unit Address field within the communication port parameter screen is used via Modbus
Plus. One should refer later sections in this manual for a further explanation of the Modbus Plus addressing
scheme for accessing relay information.
TIME SYNCHRONIZATION SELECTION
All Modbus Cards in the DPU 2000R allow for time synchronization. The DPU 2000R with serial Modbus
protocols allow for device Time Synchronization using IRIG B. DPU 2000R devices with Modbus TCP/IP Ethernet
option cards installed allow for time synchronization using SNTP ( Simple Network Time Protocol) using Ethernet.
IRIG B TIME SYNCHRONIZATION
Although not a protocol, IRIG B time synchronization is included on the communication cards within the TPU2000
and TPU2000R. The following section describes the theory, connection and configuration options present within
the TPU2000 and TPU2000R/TPU1500R. IRIG B is available on all Modbus serial board options (Type 2 or 8).
IRIG B is not available on Type"E" ethernet option boards.
IRIG B is a time code, which allows devices across the world to synchronize with a common time source to a
resolution of one millisecond.
receiver. ABB's DPU/TPU/GPU2000/R relays (herein referred to as an IED) offer IRIG B time synchronization
capabilities.
Figure 4-9 illustrates a typical IRIG B installation. An IRIG B time receiver accepts the RF signal and transforms it
into a one second time synch frame. IEDs in the substation use the one second time synch frame to govern their
internal clocks and event recorders.
TPU2000/2000R Modbus/Modbus Plus Automation Guide
IRIG B allows each device to synchronize with the frame received by an IRIG B
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