Mitsubishi-electric QJ71C24N Manuel d'utilisateur télécharger pdf (Page 265)

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MELSEC-Q

10 TROUBLESHOOTING

(2) Example of a program that reads from the current setting status

storage area

The following shows an example of a program that reads from the switch setting

status storage area for current operation of the Q series C24.

For details regarding XE and XF of the input/output signals used in the program,

see Section 10.1.2 (3).

(input/output signals X/Y00 to X/Y1F of the Q series C24)

Example of FROM instruction

Reads error description from address 203

After checking error codes and changed setting values, designate

the correct setting values and switch mode.

b15b14b13b12 b11b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

Error description (2: Communication rate error)

CH1 side

Setting communication protocol number 6

(transmission setting description)

CH2 side

Setting communication protocol number 1

(transmission setting description)

While the CH1 side is set to the non procedure protocol and the CH2 side is set to the MC protocol (format 1),

this indicates the communication rate setting error on the CH1 side.

0000000000000 110

0000111100001010

000000000000000 1

00000 10 1011010 10

0000000000000010

00 0 00 00 00 0 00 00 01

Communication protocol

Reads CH1 side communication protocol

status and transmission status from

addresses 252

to 253

Reads CH2 side communication protocol

status and transmission status from

addresses 262

to 263

Reads station No. from address 24F

Station No. 1 being set.

1 2 ... 260 261 262 263 264 265 266 267 268 269 270 ... 357 358

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Mitsubishi-electric QJ71C24N Manuel d'utilisateur Page 265