Host Link Port; Io Refresh - Omron CX-PROGRAMMER V9 Operation Manual

PART 2: CX-Server PLC Tools
CHAPTER 4 – PLC Setup Component
Consult the PLC operational manual for details when defining the execution controls. Use the following
procedure to apply settings in the Execution Controls tab.
1, 2, 3...
Execution Controls 1
Use the following procedure to apply settings.
1, 2, 3...
Execution Controls 2
Check the following settings as required.
♦ The Duplication action error setting.
♦ The Multiple JMP000 use setting.
♦ The Run program on IO verify error setting.
♦ The Startup trace setting.
♦ The Nest IO interrupts setting.
♦ The IO Interrupt setting.

Host Link Port

The Host Link Port tab of the PLC Setup component defines the protocol which allows transferring data between
the PLC and the host PC. The default settings may be used or an alternative communications protocol defined.
Use the following procedure to apply settings in the Host Link Port tab.
1, 2, 3...

IO Refresh

The IO Refresh tab of the PLC Setup component allows the specification of refreshes and their definition as either
timed or immediate refreshes. Some of the options may not be applicable depending on the device type selected.
Use the following procedure to apply settings in the IO Refresh tab.
1, 2, 3...
CX-Server PLC Tools_Page 44
1. An operand can be indirectly addressed via the DM area in either Binary or BCD. Select the
Binary setting or the BCD setting as required.
2. Set the Step Timer setting for the SFC step instructions. The default is 0.1 s.
Note: For CV1000, CV2000 and CVM1/CPU21-EV2 PLCs, EM can be used for indirect
addressing of an operand.
Note: The Step Timer setting is not available to CVM1 PLCs.
1. Check the Measure CPU-Bus Unit Cycle setting for the CPU to measure the service cycle.
2. Check the Detect Low Battery setting to flag PLC and Memory Card low battery.
3. Check the CPU standby on initialisation of bus units setting to ensure the CPU remains in
standby until SYSMAC BUS/2 terminators are detected. If this is not checked, PLC
operation begins regardless of the presence of terminators.
4. Check the Error on power off interrupts setting to ignore a momentary power interruption
(and not generate an error) or leave unchecked to generate an error on power off.
1. The Port Settings default to 9600 bps, 1 start bit, 7-bit data, 2 stop bits and Even parity.
2. Select a Unit Number setting for the Host Link port setting. This has a maximum value of
31.
1. Check the Zero-cross setting to ensure output devices accurately switch on/off high power
devices when minimum current is flowing (when the AC power supply crosses zero).
2. Check the Cyclic setting to generate a cyclic refresh at the end of program execution.
3. Check the Scheduled setting to specify a time interval between interrupt refreshes. This is
in the range 0 ms to 120 ms.
4. Check the Immediate Refresh setting to allow program instructions to be set to interrupt for
immediate refreshing. The Scheduled refresh setting must be set to 00 ms.
Note: Scheduled refreshing is not available if the PLC is set for synchronous operation.
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