Mitsubishi-electric QJ71C24N Manuel d'utilisateur télécharger pdf (Page 97)

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MELSEC-Q

4 SETTINGS AND PROCEDURES PRIOR TO OPERATION

(b) Communication rate setting (CH1 side: switch 1 (upper level); CH2 side:

switch 3 (upper level))

1 2 3

Bit position Bit position

Communication rate

(Unit: bps)

b15 to b8

Communication rate

(Unit: bps)

b15 to b8

Remarks

50 0F

14400 06

300 00

19200 07

600 01

28800 08

1200 02

38400 09

2400 03

57600 0A

4800 04

115200 0B

9600 05

230400 0C

Try lowering the communication

rate when data cannot be

communicated normally with an

external device due to overrun

errors and framing errors etc.

1 Transmission speed of 230,400 bps is available for only CH1 of the

QJ71C24N (-R2/R4).

2 When connecting external devices to both of two interfaces, the total of

the communication speed should be 115,200bps or less (230,400 bps

or less if using QJ71C24N (-R2/R4)). When connecting an external

device to either of two interfaces, the maximum of 115,200 bps is

available for the interface (the maximum of 230,400 bps if using

QJ71C24N (-R2/R4)). In this case, set 300 bps for the other interface to

which no external device is connected.

3 Set "00

" to the interface for which "GX Developer connection" is set in

the communication protocol setting. Serial communication module will

operate at the communication speed set on the GX Developer.

Set number Description Remarks

GX Developer connection

GX Developer communication rate and transmission specifications are

automatically set.

Format 1

Format 2

Format 3

Format 4

For communication with ASCII code in the specified form of an A compatible 1C

frame or QnA compatible 2C/3C/4C frame

MC protocol

Format 5 For communication with binary code in a QnA compatible 4C frame

Non procedure protocol For communication using non procedure protocol

Bidirectional protocol For communication using bidirectional protocol

For linked operation setting

Set to the CH1 side when CH1 and CH2 interfaces are used in linked operation

(operated with the communication protocol of the CH2 side).

to D

Setting prohibited —

ROM/RAM/switch test For self-diagnosis of the modules

Individual station loopback test For checking operation of each interface of the modules

1 2 ... 92 93 94 95 96 97 98 99 100 101 102 ... 357 358

Mitsubishi-electric QJ71C24N Manuel d'utilisateur Page 97

Commentaires sur ces manuels

Mitsubishi-electric QJ71C24N Manuel d'utilisateur Page 97

Commentaires sur ces manuels

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