YOKOGAWA UTAdvanced Series, User Manual

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1-5
IM 05P07A01-01EN
Overview
1 1.4 Peer-to-peer Communication (for UTAdvanced
with RS-485 Communication)
Peer-to-peer communication is a function which can be used in the ladder program
of UTAdvanced and which allows sending and receiving data for computation control
among devices via communication.
Peer-to-peer communication enables up to 32 UTAdvanced controllers to be connected.
Of these UTAdvanced controllers, each of the units of address Nos. 1 to 4 can send 4
analog data and 16 flag data to other devices, and each of the units of address Nos. 1
to 32 can reference 4 analog data and 16 flag data of the units of address Nos. 1 to 4.
These data can be used in the ladder program.
► Peer-to-peer communication: LL50A Parameter Setting Software User's Manual
1 2 4
15
32
• • • • • • • •
Controller Nos.1 to 4 can transmit and receive data. Controller Nos.5 to 32 can only receive data.
Max. 32 units
For details on wiring, refer to Operation Guide or
User’s Manual.
Specifications of Peer-to-peer Communications
Item Specifications
Interface RS-485, 2-wire type
Transmission control
procedure
Asynchronous, non-procedural, half-duplex
Baud rate 19200 bps (fixed)
Connection method Parallel connection
Number of connected units
Max. 32 (4 transmitting/receiving controllers, 28 receiving-only
controllers ）
Maximum connection
distance
1200 m
Amount of data transmitted (4 analog data + 16 digital data) per transmitting/receiving controller
Amount of data received 16 analog data + 64 digital data
Transmitted data update
period
200 ms
Communication fail
detection time
2 seconds