Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 18-40VMD001-01
Printed in U.S.A.
Form 40VMD-3SI
Pg 20
3-18
Replaces: 40VMD-2SI
© Carrier Corporation 2018
APPENDIX A — DIP SWITCH SETTINGS
There are 2 sets of DIP switches on the main board. One set
is for twinning ports; the other set is for MDC identification.
Figures A and B show the settings for each parameter
controlled by a switch. Switches are shown in the default
settings. For switches S1, S3, S5, and S7 the switch must be set
to OFF, OFF or ON, ON.
v
POSITION 1, 2 — S1 IDU PIPES SETTING
OFF, OFF
—
Normal Mode (default)
ON, ON
—
2 Ports Twinned Together
Fig. A — S1, S3, S5, and S7 Settings
POSITION 1, 2 — S3 IDU PIPES SETTING
OFF, OFF
—
Normal Mode (default)
ON, ON
—
2 Ports Twinned Together
POSITION 1, 2 — S5 IDU PIPES SETTING
OFF, OFF
—
Norma l Mode (de fa ult)
ON, ON
—
2 Ports Twinne d Toge the r
POSITION 1, 2 — S7 IDU PIPES SETTING
OFF, OFF
—
Normal Mode (default)
ON, ON
—
2 Ports Twinned Together
ON
OFF
1 2
a
POSITION 1, 2 — MDC IDENTIFICATION
OFF, OFF —
Main MDC (default)
ON, OFF —
Sub MDC Box
OFF, ON
—
Sub MDC Box
ON, ON
—
Reserved
POSITION 3 — MDC BOARD IDENTIFICATION
ON
—
Second MDC Board
(This is set by the factory and cannot be changed)
OFF —
Primary MDC Board
Fig. B — S8 Settings
ON
OFF
1 2
a
3
ON
OFF
1 2
a40-1925
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