5
3.
Connect the network to the controller, as shown in the following
diagrams.
Observing correct polarity
, connect one pair of the
dual twisted pair to the LAN and connect both wires of the other
pair to one of the LAN isolated (LAN REF) reference terminal(s).
Note: Connect the controller with other NCP devices in a
device-to-device fashion. Do not use wiring trees or stubs.
4.
Ground the NCP wiring screen
at one end of the cable only
, e.g.
at the earth terminal of an MN50-MI-NCP. Mounting a MicroNet
Touch Screen in the controller causes the controller to be on a
sub-LAN of the Touch Screen. If required, continue the MicroNet
sub-LAN from pins
32
,
33
and
71 or 72
. The main LAN must connect
to pins
30
,
31
and
69 or 70
.
MN650-XCOM VARIANT
The MN-XCOM variant allows a local MN50-LCD to be connected to
the LAN B at pins 32 and
33
.
ARCNET Network Wiring
Controllers may be networked to either a 'main LAN' under an
MN50-MI-ARC or to a 'sub-LAN' under an ARCNET router
(MN50-MI-RTR).
For performance reasons, when transferring network variables
between controllers and Touch Screens, the main LAN should have
only ARCNET routers connected to it, unless there are no sub-LANs.
Recommended cable for ARCNET networks is Belden 9502 dual
twisted-pair screened cable.
1.
Review the Precautions section.
2.
Ensure both links from the daughter board header are removed.
3.
Connect the network to the controller, as shown in the following
diagrams.
Observing correct polarity
, connect one pair of the
dual twisted pair to the LAN and connect both wires of the other
pair to one of the LAN isolated (LAN REF) reference terminal(s).
4.
Connect the controller with other ARCNET devices in a
device-to-device fashion. Do not use wiring trees or stubs.
5.
Ground the ARCNET wiring screen
at one end of the cable only
,
e.g. at the earth terminal of an MN50-MI-ARC.
The devices
at each end
of the network must be biased and terminated
by fitting jumpers to A, B and C of LK4. If the controller is not at one
end, leave the links unset.
A local MN50-LCD can be connected to the controller at pins 32, 33
and 71 or 72 (LAN B):
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17
18 19 20 21 22 23 24 25 26
27 28 29
30 31 32 33
34 35 36 37 38 39
40 41 42 43 44 45 46 47 4
8 49 50 51 52 53 54 55 56
57 58 59 60 61 62 63 64 65
66 67 68
69 70 71 72 73 74 75 76 7
7 78
This connector must have two links fitted to the
MN-650-NCP only (
not
the MN-650-XCOM).
Remove both links if using a Touch Screen.
+
-
{
MicroNet
NCP
Network
NCP Wiring when Touch Screen is not mounted on Controller:
30
31
Refer to the Cable Screens
section.
69 or 70
2nd twisted pair
connected to isolated
(LAN REF) reference
LAN A
(LAN A REF)
+
-
{
+
-
{
Main LAN
Sub-LAN
NCP Wiring when Touch Screen
is mounted on Controller:
30
31
32
33
Refer to the Cable Screens
section.
69 or 70
71 or 72
2nd twisted pair
connected to isolated
(LAN REF) reference
LAN A
LAN B
(LAN B REF)
(LAN B REF)
+
-
{
+
-
{
Main LAN
MN50-LCD
NCP Wiring when MN50-LCD is connected to the
Controller (no ribbon cable connected):
30
31
32
33
Refer to the Cable Screens
section.
69 or 70
2nd twisted pair
connected to isolated
(LAN REF) reference
LAN A
LAN B
Ensure both links from
daughter board header
are removed.
(LAN A REF)
MicroNet
ARCNET
Network
+
-
{
30
31
Refer to the Cable Screens
section.
69 or 70
2nd twisted pair
connected to isolated
(LAN REF) reference
LAN A
(LAN A REF)
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17
18 19 20 21 22 23 24 2
5 26 27 28 29
30 31 32 33
34 35 36 37 38 39
40 41 42 43 44 45 46 4
7 48 49 50 51 52 53 54 5
5 56
57 58 59 60 61 62 63 64 65 66
67 68
69 70 71 72 73 74 75 76
77 78
ARCNET termination
and biasing links
C
B
A
LK4
A = Bias-
C = Bias+
B = TM/TERM = Termination
+
-
{
+
-
{
Main LAN
MN50-LCD
NCP Wiring when MN50-LCD is connected to the
Controller (no ribbon cable connected):
30
31
32
33
Refer to the Cable Screens
section.
69 or 70
71 or 72
2nd twisted pair
connected to isolated
(LAN REF) reference
LAN A
LAN B
(LAN B REF)
(LAN A REF)
Ensure both links from
daughter board header
are removed.
