User Guide

Ref. IS.MDuino.42+ Rev. 1: 30-08-2019
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2. D53 (SD): Always at OFF Position! Switch has to be OFF position to enable the Chip Select of
the microSD card, never ON because in this position is NC (Not Connected).
1. FD RS-485 HD: Choosing between FD or HF. If this switch is ON, it enables the Half Duplex
(HD) option and disables the FD. If this switch is OFF, it enables Full Duplex (FD) and disables
HD.
1. RTC SDA: This switch enables the communication to communicate with the RTC using
I2C. Having this switch in ON mode it actives this communication, whereas if it is in
OFF mode it disables the I2C to reach the RTC.
2. RTC SCL: This switch enables the communication to communicate with the RTC using
I2C. Having this switch in ON mode it actives this communication, whereas if it is in
OFF mode it disables the I2C to reach the RTC.
3. NC: Not connected. This switch is not connected to anything; it doesn’t matter if it is in
ON mode or OFF mode.
4. NC: Not connected. This switch is not connected to anything; it doesn’t matter if it is in
ON mode or OFF mode.
8.2 B & C Zone Swithces
LEFT ZONE
SWITCH
ON
OFF
NC
-
-
NC
-
-
RTC SCL
RTC
-
RTC SDA
RTC
-
B ZONE
SWITCH
ON
OFF
NC
-
-
Q0.7
Q0.7
A0.7
Q0.6
Q0.6
A0.6
Q0.5
Q0.5
A0.5
C ZONE
SWITCH
ON
OFF
NC
-
-
Q1.7
Q1.7
A1.7
Q1.6
Q1.6
A1.6
Q1.5
Q1.5
A1.5