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DIGITAL PID CONTROLLER
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8) Communication group setting
The communication system of the T50 series is based on RS-485, and is a two-
wire half- duplex type, capable of connecting to a maximum of 32 devices. In
particular, it is a totally independent isolation structure, which very safe and
reliable, and is compatible with most communication protocols used in the
market (PC-Link, TL-Link, Modbus-ASCII, Modbus-RTU, Sync-Master/Slave).
The T50 series has a totally isolated input-output structure. A maximum of 32
devices may be connected to it, but this number may vary according to the site
and the line conditions.
(1) Communication protocols in detail
① HSTD / HSUM
PC-Link is used by some in Korea, developed by 2 corporations.
② H-TL (TL-Link)
This is Temcoline's own protocol. The multi-remote surveillance program,
which is included in the optional communications package for the T50 series,
uses this protocol.(For the reference, this program has advanced recording
functions)
③ MODA (Modbus-ASCII)
This ASCII-based protocol is commonly used in the industry, and is easy to use.
④ MODB (Modbus-RTU)
This binary-based protocol is the most widely used standard protocol in the
industry, and has a high speed.
⑤ Sync-Master/Slave
A system of Sync communication is configured with a master controller and
a number of slave controllers(up to 200 units). The slave controllers are set
to operate in the same way as the master controller, this time running information
(SV1, SV2, SV3, SV No.) is transmitting to slave controllers from master controller.
Optional
Enter to communication
setting group
Protocol selection
(PC/TL-Link, Modbus-ASCII/
RTU, Sync-Master/Slave)
Baud rate selection (B.P.S)
Parity check selection
Stop bit selection
Data Length selection
Address selection
Response time selection
-
HSTD / HSUM / H-TL
MODA / MODB
SYNM / SYNS
2400 / 4800 / 9600 /
19200 [BPS]
NONE / EVEN / ODD
1-bt(bit) / 2-bt(bit)
7-bt(bit) / 8-bt(bit)
7-bt(bit) / 8-bt(bit)
0 ~ 10 (Response time
= Handling time +
Response time) x 10ms
-
H-TL
9600 BPS
NONE
1-bt
8-bt
1
1
display description setting range condition initial value
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