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T1/T1S User’s Manual
1. System Configuration
1.7 T1S communication function
The T1S has an RS-485 muiti-purpose communication port. This port can work
independent of the programmer port.
By using this communication port, one of the following three communication modes is
available, computer link mode, data link mode and free ASCII mode.
For details of these functions, refer to the separate manual “T1/T1S User’s Manual
-
Communication Function
-
”.
Item Computer link Free ASCII Data link
Interface Conforms to RS-458 (4-wire or 2-wire)
Transmission s
y
stem Half-duplex
S
y
nchronization Start-stop s
y
stem (as
y
nchronous)
Transmission code ASCII/binar
y
ASCII Binar
y
Transmission speed 300, 600, 1200, 2400, 4800, 9600, or
19200 bps
19200 bps (fixed)
Transmission distance 1 km max.
Framin
g
Start bit: 1 bit
Data bits: 7 or 8 bits
Parity: Odd, even, or none
Stop bit: 1 or 2 bits
Special
Protocol T-series
computer link
(ASCII),
Pro
g
rammer
(binar
y
)
User defined
ASCII messa
g
es
Special
Link confi
g
uration 1-to-N N/A 1-to-1
Transmission dela
y
option
0 to 300 ms N/A N/A
Computer link mode
T-series computer link protocol can be used in this mode. A maximum of 32 T1Ss can
be connected to a master computer.
By using this mode, all the T1S’s data can be accessed by a master computer.
The T-series PLC programming software (T-PDS) can also be used in this
configuration.
Master Computer
RS-485 (1 km max.)
Max. 32 T1Ss
T1 T1 T1T1
CTi Automation - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.ctiautomation.net - Email: info@ctiautomation.net