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3. SPECIFICATIONS
MELSEC-A
3.4
Functions
This section describes functions of the transmission converter.
3.4.1
Conversion function
Conversion function is the function to convert plastic fiber cable,
twisted-pair cable, SI type optical fiber cable, and GI type optical fiber
cable to other cables, and 6 functions are available-as shown below.
By converting the cables, the following applications are available.
Model
.
.
PTC-CNV
-
-
.- .
PTC-SI
PTC-GI
PP-CNV
PP-SI
PP-GI
(1) Unit for optical fiber cable can be connected in the network con-
nected with the twisted-pair cable, or unit for twisted-pair cable
can be connected in the network connected with the optical fiber
cable. (PTC-CNV, PTC-SI, PTC-GI)
conversion function
Twisted-pair cable
-
Plastic fiber cable
Twisted-pair cable
-
.
SI
.
type optical fiber cable
Twisted-pair cable
-
GI type optical f ~ b e r cable
Plastic fiber cable
-
Plastic fiber cable
Plast~c f~ber cable
-
SI type optical f ~ b e r cable
Plastic f~ber cable
-
GI type optical fiber cable
.
(2) Maximum distance between stations can be extended from
SOm(164ft) or 1 OOm(328ft) to I km(1094yd) by converting plastic fi-
ber cable or twisted-pair cable to SI type optical fiber cable respec-
tively, and to 2km(2187yd) by converting them to GI type optical
fiber cable. (PTC-SI, PTC-GI, PP-SI, PP-GI)
Example of system configuration: To extend the distance between
stations using PTC-SI
Master unit
R
S I
*
-
I k m -'-
PTC-SI
t
T
T
R
PTC-SI
T: Twisted-pair cable
SI: SI type optical fiber cable
R: NETIMINI remote 110, ~ ~ ~ l ~ l ~ l - r e m o t e
terminal unit,
A2C 110, etc.
(1094yd)
T
I
*
R
T
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