Model MAC-32-OD
Page 2
CONFIGURATION
Setting The Mac Address
The MAC-32-OD requires an Address to be set for each MAC device in the communication system, prior
to use. The address of the MAC-32-OD MUST be set to allow proper communications between the
devices. This address is set using DIP Switch S3. Up to 255 address combinations can be selected,
using eight DIP switch positions. Addresses are set in a Binary Format as follows:
DIP
Position Binary
Open = 0
1
1
Closed = 1
2
2
3
4
4
8
Example: 1 2 3 4 5 6 7 8
5
16
0 1 0 1 0 0 0 0 = Address 10
6
32
7
64
8
128
Note
Address 0 is reserved for Master Devices and should not be used.
COMMUNICATIONS PORTS RS-232 AND RS-485
These ports are provided for use with all MAC-32-OD functions. As an example, a MAC-32-OD can be
connected to other MAC devices using the RS-232 or RS-485 ports.
COMMUNICATION CAPABILITIES
The MAC-32-OD offers one active communication port that can be jumper set for RS-232 or RS-485
operation.
Com 1
is the primary communications port that can be configured for RS-232 or RS-485. In RS-485
mode, the MAC can communicate up to 5000ft. over a pair of wire lines.
Use Jumper JP5 located on the left side of the PCB to select the desired mode. See the table below for
proper jumper settings.
For external modem communications install the jumpers at the positions shown for the RS-232 mode.
This is the factory setting.
Com-1
Jumper JP5 Configuration * factory setting
MODE INSTALL JUMPERS IN ONLY THE POSITIONS INDICATED
*
RS-232
A, G, I, J
Modem Setting
RS-485
B, D, E, G
RS-232 to RS-485
A, C, F, H
