Mitsubishi Electronics FX1S manual Driving special auxiliary relays, Additional notes

FX Series Programmable Controllers Devices in Detail 4

4.6.3Disabling Individual Interrupts

Individual interrupt devices can be temporarily or permanently disabled by driving an associated special auxiliary relay. The relevant coils are identified in the tables of devices in chapter 6. However for all PLC types the head address is M8050, this will disable interrupt I0❏❏.

Driving special auxiliary relays:

•Never drive a special auxiliary coil without first checking its use. Not all PLC’s assign the same use to the same auxiliary coils.

Disabling high speed counter interrupts

•These interrupts can only be disabled as a single group by driving M8059 ON. Further details about counter interrupts can be found in the following section.

4.6.4Counter Interrupts

Identification of interrupt pointer number: I 0 ￿ 0

FX1S

FX1N

FX2N FX2NC

Counter interrupt number 6 points (1 to 6). Counter interrupts can be entered as the output devices for High Speed Counter Set (HSCS, FNC

53). To disable the Counter Interrupts Special Auxiliary Relay M8059 must be set ON.

Example:

M8000

DHSCS K100 C255 I030

The sequence programmed after the label (indicated by the I030 pointer) is executed once the value of High Speed Counter C255 reaches/equals the preset limit of K100 identified in the example HSCS.

Additional notes:

•Please see the following pages for more details on the HSSC applied instruction.

-High Speed Counter Set, HSCS FNC 53 - see page 5-55

4-13