YASKAWA MP920 - MELSEC Communications

6 217IF Module
6.6.2 MELSEC Communications
6-22
6.6.2 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.
000003
Other MEMOBUS Device
Coil
MP 900
Coil
MP 900
Coil
000002
000001
MB000002
MB000001
MB000000
MB001002
MB001001
MB001000
(Offset: Default is 0)
(Offset: 100)
MEMOBUS message
Table 6.8 MELSEC Communications Specifications
Item General MELSEC Specifications MELSEC Specifications Supported by
the MP900
Transmission Method RS-232C: Half-duplex, full-duplex
RS-422: Half-duplex
RS-232C: Full-duplex
(Half-duplex for procedural)
RS-485: Half-duplex
Synchronization Start-stop synchronization Start-stop synchronization
Transmission Speed 300/600/1200/2400/4800/9600/19200 bps 1200/2400/4800/9600/19200 bps
Data Format Data: 8 or 7 bits
Parity: Odd, even, none
Stop bits: 1 or 2 bits
Data: 8 or 7 bits
Parity: Odd, even, none
Stop bits: 1 or 2 bits
Error Detection With or without checksum With checksum
DTR/DSR (ER/DR)
Control
Yes/No (RS-232C only) Both controls are
possible.
None
DC1/DC3, DC2/DC4
Control
Yes /N o
Transmission Protocol Special protocol Only protocol type 1 is supported.
Type 1
(1:1, 1:N, N:N)
Type 2
Type 3
Type 4
No protocol (1:1, 1:N)
Full duplex (1:1)