4–6
EPM 4
5
00 SUB METER – INSTRUCTION MANUAL
MODBUS ACTIVATION
CHAPTER 4: COMMUNICATIONS
Z
Select the
File > Properties > Settings > ASCII Setup
menu item.
Check the
Echo typed characters locally
option, as shown below.
4.2.3
Confirming Connection to the EPM4
5
00
To confirm a proper RS485 connection to the EPM4
5
00, enter the following command:
attn -D
(followed by the [ENTER] key)
If meter is properly connected, it will respond with a serial number and poll address. Once
in Modbus mode, this command will no longer work.
For example, entering the command
attn -D
followed by the [ENTER] key returns:
60005866 256
for a meter with serial number 60005866 and poll address 256.
4.2.4
Logging into the Meter
Use the following procedure to login to the EPM4
5
00.
Z
Setup a ‘key macro’ in HyperTerminal by selecting the
View > Key
Macros
menu item.
Z
Click
New
and select an appropriate macro key sequence (ALT-1 is
used the example below.
Z
Enter the following command in the
Action
area:
attn -S[
serialNumber
] -5lEvElbAl<ENTER>
Z
The password is
-s5
followed by the
LABLEVEL
text spelled
backwards, with the vowels in upper case.
This login string must be followed by the ENTER command within
the key macro.
For example, for a unit with serial number 60005866, enter the following text:
