Omron ZS Command Reference Manual page 52

Section 3
Setting Value Obtaining and Changing Command
(Note 3)
External input 0 mode and External input 1 mode settings cannot be changed because they
automatically function as bank inputs when the bank mode is used (when "external input (IN) function
mode" is set to "bank").
(Note 4)
When the external input mode is set to "STANDARD", the controller enters into the status below:
* External input of the controller is enabled,
* Commands from timing input to zero-resetting are disabled.
When the external input mode is set to "Parallel input OFF", the controller enters into the status below:
* External input of the controller is enabled,
* Commands from timing input to zero-resetting are disabled.
Therefore, to send a command related to inputs, the external input mode should be set to "Parallel
input OFF."
Once ON is written to the timing input, reset input, and LD-OFF input parameters, the ON state is kept
until OFF is written next.
Controller operates in the same manner as the input state is kept ON.
However, special care shall be taken because the operation changes depending on the state of
external input line to the controller when the external input mode is set back to the "standard mode."
Operations are performed depending on the settings when "Execution" or "Cancel" is written to the
parameter with respect to the zero-reset.
Example 1: To perform zero-reset:
The command sending sequence is as follows:
(1) Write "parallel input OFF mode" to the "external input mode" parameter.
(2) Write "execution" to the "zero-reset execution" parameter.
(3) Write "STANDARD" to the "external input mode" parameter.
An actual example of a command procedure is shown below:
(1) 02h 02h C008h F000h 8001h 00000002h
(2) 02h 02h C0C3h F000h 8001h 00000001h
(3) 02h 02h C008h F000h 8001h 00000000h
Writing commands (1) and (3) above before and after the input-related operation command,
respectively, is recommended.
ZS Series
3-26
CompoWay/F Communication Command Reference