Serial Communications Ports - Omron CQM1H - 08-2005 Operation Manual

CPU Units
Transferring and
Comparing Data
3-1-6

Serial Communications Ports

Serial Communications Modes and Ports
Programming Console in Programming Console Bus Mode
Programming Device running on personal computer in
Peripheral Bus Mode
Host computer or PT in Host Link Mode
General-purpose external device in No-protocol Mode
82
3. Do not leave the cover open during operation.
There are two methods to read/write and compare data between a Memory
Cassette and the CPU Unit: AR area control bits/flag and automatic transfer at
startup. Refer to the CQM1H Programming Manual for details.
AR Area Control Bits and Flag
AR 1400: Turn ON to write data from the CPU Unit to the Memory Cassette.
AR 1401: Turn ON to read data from the Memory Cassette to the CPU Unit.
AR 1402: Turn ON to compare contents of the CPU Unit and Memory Cas-
sette.
AR 1403: Turns ON when comparison shows the CPU Unit and Memory Cas-
sette to contain different data.
Automatic Transfer at Startup (auto-boot)
If pin 2 on the DIP switch on the front of the CPU Unit is ON, Memory Cas-
sette data will be automatically transferred to the CPU Unit at startup.
Peripheral Port
(Under the cover)
Usually used for Programming
Devices. Communications with
Programming Consoles are
supported via this port only.
Built-in RS-232C Port
(Not on CQM1H-CPU11)
Usually used for devices other than
Programming Devices. Commu-
nications with Programming
Consoles and peripheral bus com-
munications are not supported via
this port.
Device and mode
CPU Unit
Memory Cassette
Peripheral port
Yes (Pin 7: OFF)
Yes (Pin 7: ON)
Yes (Pin 7: ON)
Yes (Pin 7: ON)
Section 3-1
Built-in
RS-232C port
No
No
Yes
Yes