[SM-P00049-A]
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7
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PRODUCT
１
2) Transmission specifications
Item
Specification
Transfer rate
156k/625k/2.5M/5M/10M bps (selectable)
Max. transfer distance
(overall cable length)
Depends on transfer rate (Note 1)
Call processing
Polling
Synchronization
Frame synchronization
Encoding
NRZI
Bus
(RS485)
Data transfer format
HDLC
Error detection
CRC (X
16
+ X
12
+ X
5
+ 1)
Cable
Shielded twist pair cable (See 4.1 “Wiring”.)
Note 1 Max. transfer distance
The following explains the relationships between the transfer rate and the maximum transfer distance:
Note Transmission distance
In CC-Link, the transmission distance varies as follows, depending on the transmission
speed.
In the case of multi-drop connection (Ver.1.10):
B
RATE
Transmission
Speed
Interstation
Cable Length
Total Cable Extension
4
10Mbps
100m
3
5Mbps
160m
2
2.5Mbps
400m
1
625kbps
900m
0
156kbps
0.2m or more
1200m
In the case of T-branch connection:
B
RATE
Transmission
Speed
Maximum
Main Line
Length
Maximum
Branch
Line
Length
Interstation Cable
Length in Remote I/O
or Remote Device
Station
Interstation Cable Length
between Anterior & Posterior
Stations in Master/Local Sta-
tions or Intelligent Device Sta-
tion
1
625kbps
50m
0
156kbps
8m
200m
0.3m or more
1m or more (
※
1)
2m or more (
※
2)
※
1
The cable length exceeds 1 meter where the system configuration is only the remote I/O station or remote device
station.
※
2 The cable length exceeds 2 meters where the system configuration includes the local station or intelligent device
station.
