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CHAPTER 8 FUNCTIONS
8
8.15 Trigger Conversion Function
8.15 Trigger Conversion Function
This function provides A/D conversion in accordance with Trigger conversion request that is input.
● This function can be used only when the drive mode is set to trigger conversion mode.
● Every time Trigger conversion request (RY19, RY29) is turned on from off, the A/D converter module performs A/D
conversion once for each channel where A/D conversion is enabled.
(1) Combination with the external signal assignment function
In combination with the external signal assignment function, this function initiates A/D conversion by trigger
conversion request just at the timing of turning on a remote input signal of an extension input module from off.
For the external signal assignment function, refer to the following:
• External Signal Assignment Function ( Page 146, Section 8.18 (2))
An extension input module is required when the trigger conversion function is used with the external signal assignment
function.
(2) Restrictions
The following table lists the restrictions on the trigger conversion function.
Function name Restrictions
Averaging processing
Performs the sampling processing.
The setting of "Averaging process setting" will be ignored.
Conversion speed
switch function
The conversion speed is determined by the value of "Conversion speed setting" as in the following:
• With "Conversion speed setting" set to a value of 100μs: 100μs/channel
• With "Conversion speed setting" set to a value of 400μs or 1ms: 400μs/channel
For the conversion timing, refer to the following:
• Page 128, Section 8.15 (3)
Shift function
Cannot be used.
The setting of CH Shifting amount to conversion value (RWw2 to RWw5, RWw12 to RWw15) will be ignored.
Difference conversion
function
Cannot be used.
Turning on CH Difference conversion trigger (RY14 to RY17, RY24 to RY27) from off does not allow difference
conversion to start.
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