Cable Performance Comparisons - Mitsubishi Electric MELSEC-A Series Manual

3
REPLACEMENT OF MELSECNET (II) AND /B (REMOTE I/O NETWORK)

3.2.2 Cable performance comparisons

(1) Optical fiber cable
(a) Overall distance
The overall distance (30km) does not differ according to the optical fiber cable.
(b) Distance between stations
1) SI optical fiber cable
Type
SI optical fiber cable
(type: A-2P-)
SI optical fiber cable (type: AN-2P-)
H-PCF optical fiber cable
Broad-band H-PCF optical fiber cable
QSI optical fiber cable
*1 When the distance between stations does not satisfy the MELSECNET/H specifications, either change the type of optical
fiber cable, or install a gateway station midway along existing cables.
*2 When the distance between stations does not satisfy the MELSECNET/H specifications, use at a communication speed of
10 Mbps, change the type of optical fiber cable, or install a gateway station midway along existing cables.
2) GI optical fiber cable
Type
GI optical fiber cable
3
- 8
MELSECNET (II)
module
(Optical loop)
L type 1km
H type 500m
1km
1km
-
-
MELSECNET (II) module
(Optical loop)
2km
: Compatible,
MELSECNET/H module
(Optical loop)
10Mbps 25Mbps
500m 200m
300m 100m
500m 200m
1km 400m
1km 1km
1km 1km
: Compatible,
MELSECNET/H module Compat-
(Optical loop) ibility
2km
: Partial change required, × : Incompatible
Compat- Precautions for
ibility replacement
*1
Refer to below.
*2
Refer to below.
: Partial change required, × : Incompatible
Precautions for replacement