 The
MMTCP8AO Module is a 8 channel current output module. Each channel can be set to
output a current in the range 0 - 20mA. The outputs are isolated from the logic
and share a common negative terminal.
The resolution
is 12 bits, so writing a value to the Modbus register for each output
of 0 - 4095 would give an output current of 0 - 20mA. A value of 819 ±
1LSB will give a current output of 4mA.
Each MMTCP8AO
Module has a unique Ethernet IP address which must be programmed into the PC or
PLC. The IP address in the MMTCP8AO Module is configured via the Web Server. Any
standard Web browser such as Internet Explorer can be used to access the web
pages were configuration is carried out. The converters are factory programmed
with a default IP address of 169.254.111.111. This address must be changed
before the converter is added to an existing network.
The web page
address for viewing the digital output status parameters is http://169.254.111.111/index.htm
The web page
address for configuring the module is http://169.254.111.111/ip.htm
 | SPECIFICATIONS |
Power Supply: (Logic)
10 - 26 Vdc @ 140 mA
(Field) 20 - 26 Vdc @ 185 mA
Outputs:
Current
0(4) - 20 mA
Resolution
12 bits
Isolation
1500Vrms between field and logic
Drift
100ppm/°C typ.
Accuracy
0.05% of span
Compliance 1000 ohms max.
@ 24Vdc 500 ohms max. @ 12Vdc
Ethernet:
10BaseT - 10Mbits/s twisted pair
Connector:
11 Pin Connector on rear of unit
RJ45 on front of module for 10Base-T Ethernet
10 Way screw connector on front
The Web page
address "169.254.111.111/ip.htm" is entered into the address
line of the browser window to access the configuration page. This page allows
you to change the IP address of the MOD-MUX TCP Module and to enter a Module
Description Name and Output Names for identification/maintenance purposes.
| IP
Address: The new IP
address can be entered into the web page as shown above. After this has been
done, you must click the Submit button to send the values to the MOD-MUX TCP
Module. The screen will now be updated and if successful will continue to
display the new IP address. The new IP address will only be effective after
the MOD-MUX TCP Module power has been switched off and on again. This
feature allows you to check that the correct IP address has been entered
before being activated. If the IP address has been entered incorrectly and
the power has not been switched off, it is possible to re-enter the correct
IP address. If the power has been switched off and back on again, the
MOD-MUX TCP Module will not communicate until you enter the new IP address
into the address line of the browser window.
|
| Module
Name: This field
allows you to enter a module description name into the MOD-MUX TCP Module.
This is an identifier for diagnostic/maintenance purposes and is chosen to
best describe the MOD-MUX TCP Module in the system by name or number.
|
| Output
Names: These fields
allow you to enter an output description name into the MOD-MUX TCP Module.
This is an identifier for diagnostic/maintenance purposes and is chosen to
best describe the particular output by name or number.
|
To view the
default Web page in the MOD-MUX TCP Module, start the Web browser and type
"169.254.111.111/index.htm" into the address line of the
browser window. The main page will now be displayed in the browser window.
| Output
Number: This refers
to the actual output number on the terminals of the module.
|
| Output
Name: This is the
name that was entered in the configuration page to best describe the
outputs.
|
| Value:
This is the current
value of the outputs. To get an updated reading it is necessary to refresh
the browser window to upload the web page again.
|
| 
