11-1
IM 05P03D21-01EN
Contact Input/Output Functions
11
11.1 SettingContactInputFunction
11.1.1 SettingContactInputFunction
Description
The contact input function works by setting the contact input number (I relay) to functions
such as the operation mode.
This explanation assumes that the contact type is energized. (The function is executed
when the contact is turned on)
PVpeakandbottomvaluesreset(RST)
PV peak and bottom values can be released using contact input. (Switch by the status)
► PVpeakvaluesandPVbottomvalues:6.4ConfirmationofPVpeakandbottomvalue
Contact status Operation Remark
ON PV peak and bottom values reset –
OFF Maintains the current operation status –
Latch Release (LAT)
Latch can be released using contact input. (Switch by the rising edge)
Contact status Operation Remark
OFF→ON Releases the latch –
ON→OFF Maintains the current operation status –
Releasing the latch function releases all latched contact (alarm) outputs.
LCDBacklightON/OFFSwitch(LCD)
LCD backlight ON/OFF can be switched using contact input. (Switch by the rising edge
and the falling edge)
Contact status Operation Remark
OFF→ON Turns off the LCD backlight –
ON→OFF Turns on the LCD backlight –
PVRed/WhiteSwitch(PVRW)
PV color can be switched using contact input. (Switch by the status)
Contact status Operation Remark
ON Red color –
OFF White color –
Set "10" to the parameter PCMD.
MessageDisplayInterruption1to4(MG1to4)
The message set using LL50A Parameter Setting Software can be interrupt-displayed on
PV display using contact input. The messages are limited to 20 alphanumeric characters.
A maximum of four displays can be registered. (Switch by the rising edge)
► Message:LL50AParameterSettingSoftwareUser’sManual
Contact status Operation Remark
OFF→ON Interrupt-displays the message Pressing the DISP key erases the message.
ON→OFF Displays the current PV –
Chapter 11 Contact Input/Output Functions