OPERATION MANUAL CompoBus/S

Remote I/O Modules Section 5-3
Communications Mode,
Node Number and Output
HOLD/CLEAR Mode
262
Set the node number with the NC, ADR1 through ADR3, and hold/clear output
setting terminals.
circuitry
Internal
(see note 1.)
BS– or G
(see note 2.)
SW (see note 3.)
Note 1. The DR terminal is not used by the SRT1 Series.
2. The HOLD terminal is not used by the Input Module.
3. Low: The input bit is ON. Hi: The input bit is OFF.
Note The HOLD terminal is not used by the Input Module.
Communications Mode Settings (SRT2 Series Only)
The following communications modes are set with the communications mode
setting terminal (DR) as shown below.
DR Communications
mode
Hi High-speed Communications
Mode
Low Long-distance
Communications
Mode
Communications
distance
Communications
baud rate
Communications mode settings are possible for SRT2-series Slaves only.
SRT1-series Slaves are always in high-speed communications mode.
Note Make sure that the communications mode of the Slave is the same as that of
the Master Unit. If the communications modes are not the same, normal communications
with the Master Unit will not be possible. The operating status of
the Slave can be verified with LED indicators. The COMM terminal corresponds
to the COM indicator and ERR terminal corresponds to the ERR indicator.
Node Number Settings
Set the node number with terminals ADR1 through ADR3, as shown in the following
table.
Node number ADR3
(8)
Note 1. Low: The input bit is ON. Hi: The input bit is OFF.
Communications
cycle time
100 m max. 750 kbps 0.5 or 0.8 ms
500 m max. 93.75 kbps 4.0 or 6.0 ms
ADR2
(4)
ADR1
(2)
0 Hi Hi Hi
2 Hi Hi Low
4 Hi Low Hi
6 Hi Low Low
8 Low Hi Hi
10 Low Hi Low
12 Low Low Hi
14 Low Low Low