Data Sheet
Ref. IS.MDUINO.XXX 
7.3.2   Relay Shield C Zone 
1
 See section 8 to select suitable switch configuration for (10-24Vdc/An-Dig) configurable I/Os. 
2
 See section 8 to select suitable switch configuration for enable these connections. 
B Zone 
M-Duino 
Connector
Arduino Pin
Function 
5
R1.8 
R1.7 
R1.6 
R1.5 
R1.4 
A1.2
1
A1.1
1
A1.0
1
GND 
Q1.2
1
Q1.1
1
Q1.0
1
GNDCOM 
24VCOM 
42 
43 
44 
45 
29 
11 
10 
8 
GND 
11 
10 
8 
-- 
-- 
Relay Out 
Relay Out 
Relay Out 
Relay Out 
Relay Out 
Analog Out 
Analog Out 
Analog Out 
GND 
Digital/PWM Out 
Digital/PWM Out 
Digital/PWM Out 
External Isolated Out Gnd 
External Isolated Out Vdc 
C Zone 
M-Duino 
Connector
Arduino Pin
Function 
2
R0.3 
R0.2 
R0.1 
GND 
I0.5 
I0.4 
I0.3 
I0.2 
I0.1
2
(-)I0.1 
I0.0
2
(-)I0.0 
30 
27 
28 
GND 
A9 
A8 
A7 
A6 
19 
-- 
18 
-- 
Relay Out 
Relay Out 
Relay Out 
GND 
Analog/Digital Input 
Analog/Digital Input 
Analog/Digital Input 
Analog/Digital Input 
Interrupt 1 In 
GND I0.1 
Interrupt 0 In 
GND I0.0 
RELAY Outputs 
ANALOG Output (Switch 
Configuration) 
DIGITAL/PWM Outputs 
(isolated) 
. 
RELAY Outputs 
ANALOG/DIGITAL Inputs 
INTERRUPT Inputs (isolated) 
Configuration Switch* 
(see section 8 to select correct 
configuration for outputs). 
Top Zone 
Led indicator I/Os state 










