SMY133-SMY134-SMP133 Operating Manual
Digital inputs can be used :
•
for
state monitoring
(a contact closure etc.)
•
as
pulse
or
frequency counter
(see description below)
•
as input quantity of
an I/O setup clause condition
(see description below)
Actual state of both alarm lights and digital I/Os can be checked on the status bar (see above).
6.1 Connection of the I/Os
The I/O connector is situated in the bottom right corner.
Inputs & outputs are connected to terminals on a rear panel of an instrument according to the following
tables.
RR
/
RI
/
II
Models – I/O Connection
terminal
No.
signal
notes
15, 16
O1A, O1B …
DO1
/
RO1
digital output
- input and outputs are insulated both from
instrument internal circuitry and mutually
recommended wire type : H05V-U (CY)
rec. minimum cross-section : 0.75 mm
2
maximum cross-section : 2.5 mm
2
17, 18
O2A, O2B …
DO2
/
RO2
digital output
19, 20
I1A, I1B …...
DI1
digital input
V
Models – I/O Connection
terminal
No.
signal
notes
41
D1 …
DO1
digital output or
DI1
digital input
- input and outputs are unipolar
- common pole of outputs „DO“ is positive (+)
- common pole of inputs „DI“ is negative (-)
- inputs and outputs are insulated from
instrument internal circuitry
- DO1/DI1 & DO2/DI2 pair is insulated from
DO3/DI3 & DO4/DI4 pair
recommended wire type : H05V-U (CY)
rec. minimum cross-section : 0.5 mm
2
maximum cross-section : 1.5 mm
2
42
D2 …
DO2
digital output or
DI2
digital input
43
C12 ... DO1/DI1 & DO2/DI2 common pole
44
D3 …
DO3
digital output or
DI3
digital input
45
D4 …
DO4
digital output or
DI4
digital input
46
C34 ... DO3/DI3 & DO4/DI4 common pole
40
Fig. 6.1 : SMY133/134 – Connectors