12 |
P a g e
To allow “read/write” CAN and
120
Ω termination; jumpers J2
and J12 must be connected
as per picture in
Figure 3
.
This is the factory default
setting for all new units.
Figure 3
FM 36xxi / FM 37xxi / FM 38xxi Circuit board showing jumper positions for
“read/write” CAN mode with 120 Ω termination
For “read/write” CAN without
120
Ω termination; jumpers J2
and J12 must be as per
picture in
Figure 4
.
Figure 4
FM 36xxi / FM 37xxi / FM 38xxi Circuit board showing jumper positions for
“read/write” CAN mode without 120 Ω termination
J1939 or OBDII CAN (Read /
Write)
With 120 Ohm termination
Use this setting for OBDII or
when the FMS gateway
expects an
“Acknowledgement” message
on the hardware layer.