PART 2: CX-Server PLC Tools
OMRON
CHAPTER 4 – PLC Setup Component
CX-Server PLC Tools_ Page 43
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…
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.
Execution Controls 1
Use the following procedure to apply settings.
1, 2, 3…
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.
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…
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.
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…
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.
Содержание CX-Programmer 9
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