4
Featu res Section 1-1
Better Connections to
Machine Components with
Serial Communications
Connections can be easily made to general-purpose machine components
and dedicated controllers. The Serial Communications Board (an Inner
Board) supports a protocol macro function. You can create macros for proto-
cols according to the communications specifications of the external device,
allowing data transfers with general-purpose devices to be executed with a
single PMCR instruction. Essentially any device with a serial port can be com-
municated with, such as temperature controllers, bar-code readers, and dedi-
cated numeric controllers.
Distributed Control with
Compact PCs with
Network
Communications
A Controller Link Unit can be included in the CQM1H. Data can be exchanged
between several PCs using a Controller Link Network. Data links are sup-
ported to create shared data areas and message communications are sup-
ported to enable sending required data and commands using network
communications instructions. The Controller Link Network can be easily con-
structed using twisted-pair cable. Data exchange is also supported with
C200HX/HG/HE, CS-series, CVM1, and CV-series PCs, as well as with per-
sonal computers.
Note Data links can be created with another CQM1H or with a CQM1, CPM1,
CPM1A, CPM2A, CPM2C, SRM1, C200HX/HG/HE, or C200HS simply by
making a 1:1 connection between the built-in RS-232C ports in the CPU
Units.
Serial communications
Serial Communications Board
The following serial commu-
nications modes are available:
• Protocol Macro
• Host Link
• No-protocol
• 1:1 Data Link
• NT Link (1:1 mode/1:N mode)
RS-232C
RS-422A/485
Temperature controller
Bar-code reader
or
Dedicated controller
General-purpose external devices with RS-232C or RS-422A/485 port.
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