6 link port of rs485, Computer link mode, Link port of rs485 – Toshiba SX 2000 User Manual
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Chapt.1 System Configuration
1.2.6
LINK port of RS485
The S2T supports the following communication function mode on the LINK port.
Computer link mode
The computer link mode is used to connect between the S2T and a master computer
(included an operator interface, etc.).
By preparing the communication software based on the Toshiba’s computer link protocol
on the master computer, the following functions become available by the master
computer. The computer link protocol is a simple ASCII message communication
system.
Up to 32 S2T can be connected to a master computer on the RS-485 communication
line. (one-to-N configuration)
• Reading data (register/device value) from the S2T
• Writing data (register/device value) into the S2T
• Monitoring the S2T operation status (RUN/HALT/ERROR)
• Controlling the S2T operation mode (RUN/HALT)
The programmer can be connected to this link as a master computer.
One to N configuration
Master Computer
IRS232C/485 cqnyerterj
RS485(1km max.)
S2T
S2T
S2T
• •
max.32
Fig.1-2-2 An example of computer link system configuration
14
Sequence Controller S2T