POWER:
The 2M22 obtains its operating power
from the module interconnection bus. The
operating power originates from the MUX Base
Module (2M55, 2M57, 2M59 or 2M61) or from an
EOTec 2000 universal power supply (2A06 or
2A16)
SERIAL DATA:
The Channel 1 output terminal
block is towards the bottom-front of the unit and
the Channel 2 output terminal block is directly
behind and below Channel 1. On both terminal
blocks, the individual screw terminal connections
are numbered from left-to-right as follows:
RS-232
Terminal 1
no connection
Terminal 2
Common (COM)
Terminal 3
Transmit (TXD)
Terminal 4
Receive (RXD)
RS-485
Terminal 1
no connection
Terminal 2
no connection
Terminal 3
A Input/Output
Terminal 4
B Input/Output
Description
The Model 2M30, RS-232/485 Module is
designed to provide two channels of bi-
directional, half-duplex serial communications.
The input signals from a 2M30 module on one
end of the fiber link are passed to its MUX Base
Module where they are multiplexed and
converted to a fiber optic signal. The MUX Base
Module at the other end of the fiber link de-
multiplexes the signals and passes them to the
mated 2M30 Module for conversion back to their
original serial data format.
Non-illuminated LED status indicators or LED
indicators that are red or flashing red can point to
problem areas of the individual modules of the
EOTec 2000 MUX system.
The upper LED indicator on each module is
illuminated green when operating power is present
at the module. If this LED is not illuminated, verify
that power is applied, that the modules’
interconnection bus is fully seated at each module,
that the voltage levels and current ratings of the
power source are sufficient for operation and that
the polarities of the connections are correct.
Cycling the power will reset the units and restart
internal programming.
On the MUX Base Module, directly above the fiber
ports is a bi-color (red/green) LED status indicator.
When this LED is green, the MUX Base Module is
operating normally. If this LED is illuminated
constant red, it is indicating that its receive optical
signal level is inadequate for system operation.
Verify the fiber optic cables are not broken, are
connected from TX to RX and are securely
fastened. If this LED is
flashing red
it is indicating
duplicate or non matching I/O module addresses.
Verify that there is an address match between the
input module and its corresponding output module
and that no two modules on the same side of the
fiber link are set to the same address.
On the I/O modules, there are two channel status
LED indicators marked CH1 and CH2 that are
illuminated Green when input/output signals are
present. If a channel status LED indicator is not
illuminated, verify that the input/output connections
are connected to the correct terminals and that the
polarities are also correct. On the analog input
modules, measure the input signal levels and
ensure they are present and are
at least
1mVDC
for 0 to 10VDC input module or 0.002mADC for 4
to 20mA input module. These same levels on
each output of the analog output modules will
illuminate its corresponding channel status LED.
If you are still experiencing difficulty, contact the
factory for assistance.
System Troubleshooting Tips
Connections
Operational Settings
Use a small screwdriver to press on the latches
(indentations) at the top and bottom of the
housing. Slide the housing open.
MODULE ADDRERSS SETTING:
A two position
DIP switch, SW1, is used to set the
address
of
the module and it must
match
the address of its
mating module at the
opposite
end of the fiber
link.
Do not
set two modules at the
same
end of
the fiber link to the same address setting. The 4
possible address settings are:
DIP switch locations
CHANNEL SETTINGS:
The setting of a five
position DIP switch determines each channel’s
communications parameters, independently. Use
SW2 to set the Channel 1 parameters and use
SW3 to set the Channel 2 parameters. The
settings for the switches are as follows:
Position
1:
ON = Use parity bit; OFF = No parity bit
Position
2:
ON = RS-485; OFF = RS-232
Positions 3, 4 & 5 respectively (Baud rate):
ON, OFF, ON = 9.6K Baud
ON, OFF, OFF = 19.2K Baud
OFF, ON, ON = 38.4K Baud
OFF, ON, OFF = 57.6K Baud
OFF, OFF, ON = 115.2K Baud
OFF, OFF, OFF = 230.4K Baud (RS-485)
Close the housing by sliding it back together until
both the top and bottom latches "click" into place.
Address SW1-1 SW1-2
00 OFF OFF
01 OFF ON
10 ON OFF
11 ON ON
