Cables; Rs-232C Interface Cables - YASKAWA MP920 User Manual

6 217IF Module

6.4.1 RS-232C Interface Cables

6.4

Cables

6.4.1
IMPORTANT
This section explains the cable specifications for communications using the 217IF Module.

RS-232C Interface Cables

1. The power system, control system, and electrical system, as well as the transmission system, must
be wired separately.
2. There are two D-sub 9-pin (CN1, CN2) connectors for the RS-232C interface on the 217IF Module.
3. The maximum length of the RS-232C cable is 15 meters. This cable should be as short as possible.
4. The RS-232C interface of the 217IF Module is not isolated. A malfunction may sometimes occur
due to noise from the connected terminals. If noise is a problem, use a shielded cable or a modem to
reduce the noise.
The following table shows the 217IF RS-232C transmission line connections of 217IF Mod-
ule.
Table 6.4 217IF RS-232C Transmission Line Connections
MP920 217IF (CN1, CN2)
Signal Name Pin No.
1
FG
2
SD (TXD)
3
RD (RXD)
4
RS
5
CS (CTS)
6
DR (DSR)
7
SG
8
CD
9
ER (DTR)
Cable Connection and Signal
Direction
6-10
Remote Station
(D-sub 25-pin)
Pin No. Signal Name
1
FG
2
SD (TXD)
3
RD (RXD)
4
RS
5
CS (CTS)
6
DSR (DR)
7
SG
8
CD
20
DTR (ER)