MODEL: 22LS1

22LS1 SPECIFICATIONS

ES-6557 Rev.6 Page 4/7

http://www.m-system.co.jp/

B3 = [(N3 + N4) × 3 – 24] + (N3×8 + N4×4 – 32) × 2

•Total Data Volume, first group

C1 = 5 + B1 + B2

•Total Data Volume, second group

C2 = 5 + B1 + B3

•Contact Inputs

Relation between the Total Data Volume and a time (Ta) required to transmit contact inputs from one station (Master Station) is

shown in the following equation:

Ta = C1 × A

where A is a parameter determined by the transmission speed of modems (see A).

The transmission speed (Tb) for the other station (Slave Station) can be calculated in the same way.

Actual time (TA) required for a contact input to be transmitted from Master Station to Slave Station varies according to timings

of signal status change and transmission status, if there is no transmission error.

Ta ≤ TA ≤ Ta + Ta + Tb

•Analog Inputs

Relation between the Total Data Volume and a time (Ta) required to transmit analog inputs from one station (Master Station) is

shown in the following equation:

Ta = (C1 + C2) × A

where A is a parameter determined by the transmission speed of modems (see A).

The transmission speed (Tb) for the other station (Slave Station) can be calculated in the same way.

Acutal time (TA) required for a contact input to be transmitted from Master Station to Slave Station varies according to timings

of signal status change and transmission status, if there is no transmission error.

Ta ≤ TA ≤ Ta + Ta + Tb

■RUN CONTACT OUTPUT

RUN contact is turned off when one or more of the following three conditions occur:

•Failure of the 22LS1

Errors in power supply, memory, etc.

•SIN-NET communication errors

When there is an error occurs to 22LA1 or DLA1 units connected to the 22LS1.

•RS-232-C communication errors

When there is an error occurs in communication with the modem connected to the 22LS1 (communicating with the paired

22LS1 via leased circuit), such like wire breakdown.

[CAUTION]

When the network is reconfigured e.g. by noise interference,

the RUN LED and output for all units on the

network turn briefly OFF until they are turned ON after the reconfiguration is complete.