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3.3.1
I/O Connector Pin Definition
Table 3.4: I/O Connector Signal Descriptions
Pin Name
IDI<00 ~ 15>
IDI<16 ~ 31>
IDO<00 ~ 15>
IDO<16 ~ 31>
ECOM0
ECOM1
PCOM0
PCOM1
E_GND
CH_FRZ_IN
CH_FRZ_COM
Counter_CLK/DI00 ECOM0
Counter_Gate/DI16 ECOM1
Counter_Output/
DO00
3.3.2
Isolated Digital Input
Each of isolated digital input channels accepts bi-directional 10 ~ 50 V
inputs. Meaning that you can apply positive or negative voltage to an isolated input
pin (V
). Every 16 input channels share one common pin. Figure 3.3 shows how to
IN
connect an external input source to one of the card's isolated input channels.
MIC-3756 User Manual
Reference
Direction
ECOM0
Input
ECOM1
Input
PCOM0
Output
PCOM1
Output
-
Input
-
Input
-
Output
-
Output
-
-
CH_FRZ_COM
Input
-
Input
Input
Input
PCOM1
Output
Figure 3.3 Isolated Digital Input Connection
22
Description
Isolated digital input of group 0
Isolated digital input of group 1
Isolated digital output of group 0
Isolated digital output of group 1
Common pin for IDI00~IDI15
Common pin for IDI16~IDI31
Common pin of IDO00~IDO15 for
inductive loads
Common pin of IDO16~IDO31 for
inductive loads
Isolated ground
Channel-Freeze function input pin
Common pin for Channel-Freeze
function input
Counter Clock Source input & Iso-
lated digital input DI00 of group0
Counter Gate Control Pin & Isolated
digital input DI16 of group1
Counter Output & Isolated digital
input DO00 of group0
voltage
DC
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