146
(2) External signal assignment function
This function allows remote input or output signals of the main A/D converter module to be assigned to remote
I/O signals of the extension I/O module connected. Signals can be input from the extension I/O module and error
signals can be output to the external at the fixed timing without influence from the sequence scan or link scan.
(a) How the external signal assignment function operates
Ex.
1: Assigning Trigger conversion request (RY19) of a main A/D converter module to RX2E of an extension
input module
Assigning a remote output signal of the main A/D converter module to a remote input signal of the extension input module
does not allow the pre-assigned remote output signal to be turned on/off or monitored by program. Change or monitor the
assigned remote input signal of the extension input module. (In the above example, change or monitor RX2E.)
Target remote I/O signal of external signal assignment
Buffer memory to be set
Trigger conversion request (RY19)
"Trigger conversion signal assignment"
Input signal error detection signal (RX1C)
"Input signal error detection signal assignment"
Alert output signal (RX18)
"Alert output signal assignment"
Error flag (RXA)
"Error flag assignment"
Warning flag (RX7)
"Warning flag assignment"
Sensor
(external device)
Main A/D converter module
Extension input module
Direction of data flow
Trigger conversion request (RY19)
In response to the sensor (external device)
connected to the extension input module,
a corresponding signal turns on.
RY19
RX2E
0
ON
OFF
ON
OFF
Controlled by the A/D converter module
RX2E
(extension input module)
Waiting for trigger input
Waiting for trigger input
OFF
CH1 Digital operation value
(RWr2)
Trigger conversion completed
flag (RX19)
A/D conversion
Conversion value
A/D conversion
Summary of Contents for NZ2EX2B-60AD4
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Page 49: ...47 CHAPTER 4 PROCEDURES BEFORE OPERATION 4 Memo ...
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Page 169: ...167 CHAPTER 10 MAINTENANCE AND INSPECTION 10 Memo ...
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