Mitsubishi Electric RD62P2E Application User's Manual page 24

Precautions for using the coincidence output function
When CH1 Coincidence signal enable command (Y2) is turned on before the count is started or while the coincidence output
point setting value and the current value match, the coincidence output is performed. To avoid this status, perform one of the
following operations before turning on CH1 Coincidence signal enable command (Y2).
■Setting different values to the coincidence output point setting value and the current value
Set different values to the coincidence output point setting value and the current value by one of the following methods.
• Changing the coincidence output point setting value
• Changing the current value using the preset function
• Changing the current value by inputting a pulse
■Turning off the counter value coincidence signal
Turn on and off CH1 Coincidence signal No.1 reset command (Y0).
• Since CH1 Present value (Un\G2 to Un\G3) and CH1 Coincidence output point No.1 (Un\G4 to Un\G5) are
0 after the CPU module is powered on or is reset, CH1 Counter value coincident (point No.1) (X2) turns on.
• When CH1 Coincidence signal enable command (Y2) is turned on while CH1 Counter value coincident
(point No.1) (X2) is on, the coincidence output is performed to outside the module. To avoid an incorrect
coincidence output, turn on and off CH1 Coincidence signal No.1 reset command (Y0) before turning on
CH1 Coincidence signal enable command (Y2), and turn off CH1 Counter value coincident (point No.1)
(X2).
Precautions for mounting a remote head module
When a high-speed counter module has been mounted with a remote head module, whether to hold or clear the Y signal at a
disconnection of own station can be set with "CPU error output mode setting" in the module parameter. According to this
setting, whether to continue counting and operate the coincidence output, or to stop counting and not to operate the
coincidence output can be specified.
Setting methods when the parameter is set with "CPU error output mode setting" are described as follows.
• Enable the station-based block data assurance for cyclic data in the sending side.
• To hold the PWM output at a disconnection, select "Hold" for "CPU error output mode setting" in the module parameter.
• To stop the PWM output at a disconnection, select "Clear" for "CPU error output mode setting" in the module parameter.
This setting is valid in module units. The parameter cannot be set in each channel.
1 FUNCTIONS
22
1.3 Coincidence Output Function