Melsec Communications - YASKAWA MP920 User Manual

6 217IF Module

6.6.2 MELSEC Communications

6.6.2
Item
Transmission Method
Synchronization
Transmission Speed
Data Format
Error Detection
DTR/DSR (ER/DR)
Control
DC1/DC3, DC2/DC4
Control
Transmission Protocol
Other MEMOBUS Device
Coil
000003
000002
MEMOBUS message
000001

MELSEC Communications

MELSEC Communications Specifications
The following table shows the general specifications for MELSEC communications, and
which of these specifications are supported by the MP900.
Table 6.8 MELSEC Communications Specifications
General MELSEC Specifications
RS-232C: Half-duplex, full-duplex
RS-422: Half-duplex
Start-stop synchronization
300/600/1200/2400/4800/9600/19200 bps
Data: 8 or 7 bits
Parity: Odd, even, none
Stop bits: 1 or 2 bits
With or without checksum
Yes/No (RS-232C only)
Yes/No
Special protocol
Type 1
Type 2
(1:1, 1:N, N:N)
Type 3
Type 4
No protocol (1:1, 1:N)
Full duplex (1:1)
MP 900
Coil
MB000002
MB000001
MB000000
MP 900
Coil
MB001002
MB001001
MB001000
MELSEC Specifications Supported by
RS-232C: Full-duplex
(Half-duplex for procedural)
RS-485: Half-duplex
Start-stop synchronization
1200/2400/4800/9600/19200 bps
Data: 8 or 7 bits
Parity: Odd, even, none
Stop bits: 1 or 2 bits
With checksum
Both controls are None
possible.
Only protocol type 1 is supported.
6-22
(Offset: Default is 0)
(Offset: 100)
the MP900