Built-in Channel Specifications
(Original Document)
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General
The built-in channel of TSX SCY 11601/21601 modules includes:
Specifications
Specifications of the built-in link for the following three protocols:
Uni-Telway (21601)
Modbus
Character Mode (21601)
Type
Master/Slave
Master/Slave
Half duplex
Flow
9600 bits/sec. Parameters can be set from 1200 to 19200 bits/sec.
9600 bits/sec. Parameters can be set from 1200 to 19200 bits/sec.
9600 bits/sec. Parameters can be set from 1200 to 19200 bits/sec.
Number of devices
28
32
-
Number of slave addresses
98
98 for the 21601
247 for the 11601
-
Length of bus without branching
1000 m
1300 m
1000 m
Message size
240 bytes
256 bytes
4 Kb
Utilities
Message handling: Master/Slave. Slave/Slave. UNI-TE requests.
Read words/bits. Write words/bits. Diagnostics.
Send character strings. Receive character strings.
CAUTION
UNEXPECTED BEHAVIOR OF APPLICATION
Do not use wrong address parameters. For instance:
  • Do not set an address parameter that does not correspond to the targeted equipment.
  • Do not use value higher than 98 in ADDR function (field "e" for the equipment address) when using CPU embedded serial port or TSXSCY21601 channel 0 or 1.
Failure to follow these instructions can result in injury or equipment damage.