Network Card User's Manual

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1. Introduction to S20LP

1.1 System configuration

The following figure shows the typical system configuration of the S20LP.

Station No.1

S20LP Port

T2N T3H

Station No.2

SN325

T3H

I/O bus

OTR2

SN325

T3H PCS

OTR1

T2N

internal bus

OTR1OTR1 OTR2OTR2

(General station) (General station)

(Main terminal station) (Back-up terminal station)

External

Loop

Device

PTLS9

OTR1 OTR2

(General station)

Transmission line 1 (Loop 1) : The data is sent from OTR1 to OTR2.

Transmission line 2 (Loop 2) : The data is sent from OTR2 to OTR1.

Total number of stations Max. 64 stations

Transmission distance 1 km (between stations)

4 km (between stations ; connecting SBR22)

30 km (system totla)

Scan transmission capacity 4096 words

Maximum transmission capacity 1024 words / station

Parameter setting tool S-LS (runs on personal computer)

(Note 1) SBR22 is the long distance repeater for S20LP