9 pins SUB-D
connector
Serial line computer
5 Ground
2 Receive
3 Transmit
RS 485 converter
Westermo Access MA-42
To next
T-block
To computer
GND +OUT -OUT +IN -IN
7
3
2
2
c
R
2
c
n
t
n
S
o
e
o
3
n
i
1
2
3
4
5
o
n
n
e
c
L
i
to
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c
This picture shows how to connect TIMEmate's in a RS485
multidrop network with T-junctions. You will need an extra T-block
box for each TIMEmate. If two TIMEmates are close together you can
connect them both to the same T-block.
The maximum length of the network will decrease and the signal
will be slightly more distorted, compared to the method on the previous
page.
T - Block
1
2
3
4
5
6
7
Do not remove jumpers
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
7
Connect a 8V lead battery to these pins.
It will slowly recharge. This battery will supply the
timemate when the 220V power fails.
Input 1 and 2 can be used
to connect external switches
to the timemate..
External relay.
Must be with
a 5V coil.
5
V
1
2
V
G
N
D
Switch input 1
Switch input 2
+5V for inputs
Relais 3 driver
8V battery
TIMEmate III Special connections
Earth
Shield
