03/03 9 - 16 DS 2.501A
COMMUNICATION CONFIGURATIONS
AVAILABLE COMMUNICATIONS PORTS
Note:
Each available communication port on the computer can be used for a hardwired
output (RS422/485) or a modem output (RS232). One modem on the computer
will allow access to any number of remote sites. Hardwired sites using
stand-alone RS232/485 converters may require extra RS232 ports to be fitted.
Maximum number of controllers on the Network:
The maximum size of the system is determined by the computer used
but the following gives some general information:
Up to 999 hardwired or modem sites per system.
Each site (hardwired or modem) may have up to 32 controllers on it, to
extend this to 63 an MIU must be used.
It is possible to use more than 63 IACs per LAN by using
Touch-screens to create sub-LANs.
One modem or LAN per computer communications port.
Maximum number of computer modems or LANs is limited by the
number of slots and communication ports supported by your computer
- see table for details.
WESTERMO SURFACE MOUNT VERSION MA-42 INTERNAL
SWITCH SETTINGS
WESTERMO NON SURFACE MOUNT VERSION MA-42
INTERNAL SWITCH SETTINGS
DO NOT OPEN THE MA–42 UNTIL THE MAINS WIRING HAS
BEEN DISCONNECTED.
Open the MA-42 as described in its manual. Switch positions are
shown below.
DO NOT OPEN THE MA–42 UNTIL THE MAINS WIRING HAS
BEEN DISCONNECTED.
Open the MA-42 as described in its manual. Switch and jumper
positions are as shown.
Follow the Static Precautions on Page 14. Follow the Static Precautions on Page 14.
FRONT PANEL
CONNECTORS ON REAR PANEL
Fig.10
FRONT PANEL
CONNECTORS ON REAR PANEL
Fig.11
SWITCH SETTINGS FOR MA-42 (Article Number 3042-3003)
S1 - set to local power supply 115 or 230Vac
S2
1 - ON
2 - OFF
3 - OFF
4 - ON
5 - OFF
6 - OFF –
S3
1 - ON
2 - OFF
3 - ON
4 - ON
5 - OFF
6 - OFF
Transmitter activated by RTS
CTS controlled by RTS
DCD controlled by RTS
0ms RTS-CTS delay
Receiver terminated
(4-wire)
4 Wire (Full duplex)
SWITCH SETTINGS FOR MA-42
S4 - set to local power supply 110 or 220Vac
S5
1 - ON
2 - OFF
3 - OFF
4 - ON
5 - OFF
Jumper Settings
X6 - 7 to 8 and 2 to 1 Receiver terminated (4-wire)
X7 - 2 to 1 Four wire (Full duplex)
Transmitter activated by RTS
CTS controlled by RTS
DCD controlled by RTS
Computer Type
Maximum number of
communication ports
AT compatible PC 386/486/
Pentium
3 Ports if a bus mouse is used
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