Section 2 Specifications
2-14
2-4-2 Analog output module functions
(1) Switch batch setting function
With the operation setting switches provided on the module rear panel, it is possible to set operation range and the unit for
digital input value.
When the unit of digital input value is set to %, the module operates, regarding
Lower limit value of range: 0.00%,
Upper limit value of range: 100.00%
Digital output range: -2.50% to 102.5%.
Note 1: If the Switch Batch Setting function is enabled after scaling values or other parameter have been changed from the
parameter setting window, the changed parameters are not reflected on operation and the parameters return to the
default values.
Note 2: When the switch is set to an invalid value, bit 11 of offset address +0 is set ON.
Note 3: The setting of the switch cannot be checked from application program. Be sure to check the switch setting before the
system is started or before maintenance or replacement is performed.
DD
DD
DFor how to set the switch, refer to “2-5 Names and Functions”.
(2) Individual channel operation range setting function
When the operation setting switch on the module rear panel is set to “Software Set Range”, operation range can be set for
individual channel by application program.
(3) Output enable/disable setting function (analog 8ch output modules only)
When the operation setting switch on the module rear panel is set to “Software Set Range”, “enable output for all channels” or
“enable output for CH1 to CH4, disable output for CH5 to CH8” can be set by application program.
When “enable output for CH1 to CH4, disable output for CH5 to CH8” is set, sampling time is halved, and the output disabled
channels output 0 V or 0 mA.
Note: Because the accuracy of output value is not guaranteed for output disabled channels, these channels may output
slightly offset values.
(4) Individual channel gain/offset value fine adjustment function
When the operation setting switch on the module rear panel is set to “Software Set Range”, gain and offset values can finely
be adjusted for individual channel by application program.
* For the detailed specifications and setting, refer to “4-2-2 (8)”.
(5) Scaling function
When the operation setting switch on the module rear panel is set to “Software Set Range”, the scale for A/D conversion can
be set for individual channel by application program.
* For the detailed specifications and setting, refer to “4-2-2 (8)”.
2-4 Functional Specifications
When the system is started up, the analog value that corresponds to digital value “0” (zero) is output (for
approximately several hundreds milliseconds since the “ONL” LED has lit till the application program starts).
Therefore, for scaling, the value that corresponds to digital value “0” (zero) should be set such that fail safe
operation will be performed. Also when the system is shut down or becomes abnormal, the analog value that
corresponds to digital value "0" (zero) is output (when this module in I/O Reset mode).
To Next Page
Loading...
