Network Restrictions - Toshiba TOSDIC-CIE DS Installation And Wiring Manual

Apendix 1 100M-Ethernet Control LAN Network Configuration

Network Restrictions

Though the 100M-Ethernet control LAN is compliant with the IEEE802.3u specification, it is
subject to restrictions as the TOSDIC-CIE DS system. Thus, configure the network system
according to the following restrictions.
(1) The lengths of twisted pair cables should be as shown in the table below.
Between switching hub and station
Between hub and station
Between switching hub and hub
Between FX-TX conversion module and station
Between FX-TX conversion module and switching hub
Between FX-TX conversion module and hub
(2) The lengths of optical fiber cords/cables should be as shown in the table below.
Between switching hub and switching hub
Between switching hub and station
Between switching hub and hub
Between hub and station
(3) The number of switching hub stages is limited to a maximum of 2. (See Figure A.10)
By taking into account the delay time in the switching hub, the TOSDIC-CIE DS system
limits the number of switching hub stages to 2 to secure a response time between the OIS and
PCS. Therefore, the maximum transmission distance between two stations is as shown in
Table A.6
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Table A.4 Twisted Pair Cable Length
Table A.5 0ptical Fiber Cords/Cables Length
Table A.6 Transmission Distance
Maximum transmission distance
Maximum Length
30 m
30 m
30 m
30 m
3 m
3 m
Maximum Length
2 km
2 km
150 m
150 m
10M-Ethernet 100M-Ethernet
2.5km 8.0km
Remarks
See Figure A.4
See Figure A.4
See Figure A.5
See Figure A.6
See Figure A.6
See Figure A.8
Remarks
See Figure A.6
See Figure A.7
See Figure A.8
See Figure A.9
Applicable to
only one station