User`s manual
MTEK6000 SERIES USER'S MANUAL 
2-12   January 2002 
COMMUNICATIONS 
To communicate with the MTEK6000, the 
Site ID (RUID) in the device must be the 
same as the Site ID entered in the software 
package. The Site ID is a unique 
identification number (1 to 65,535) that 
allows the Metretek, Inc. software packages 
to communicate with the MTEK6000. The 
default Site ID number is 1. Software can be 
used to enter a number other than the default.  
Refer to the respective software User’s 
Manual for additional information on these 
and other functions. The optional external 
display and keypad can also be used to 
change the Site ID from its default value. 
RS-232C Serial (Direct) Communications 
(9600 Baud) 
In its standard configuration, the MTEK6000 
is equipped with one RS-232C serial port.  
An optional RS-232C serial cable (Part # 
1002-0235C-001) is required for direct 
communications. The serial port allows an 
operator to configure and collect data with an 
industry-standard (IBM
, Compaq
, etc.) 
portable computer (software is required for 
this function). The MTEK6000 
communicates at 9600 baud with portable or 
host computers connected directly to the 
serial port. When communicating with the 
MTEK6000,  Busy will be displayed on the 
display. Table 2-2 shows the diagnostic 
features of the Activity indicator when the 
cable is connected. 
WARNING 
The MTEK6000 will not go to sleep if the 
RS-232C serial cable is left connected and 
battery life will be affected drastically. 
Modem Communications (2400 Baud) 
NOTE 
This modem complies with Part 68 of the 
FCC Rules. See Appendix E for details. 
The internal Hayes compatible modem offers 
automatic answering and dialing. The modem 
communicates at 2400/1200/300 baud. The 
modem by itself can only be used in areas 
classified as non-hazardous or Class I, 
Division 2. To maintain the MTEK6000’s 
intrinsic safety classification in more 
hazardous areas such as Class I, Division 1, an 
optional Phone Line Interface (PLI) must be 
used. This device removes the high voltage 
ring-detect circuitry from the device and 
brings low-level signals into the hazardous 
area through intrinsic safety barriers. 
Connecting the Telephone Line 
If the MTEK6000 is situated in a non-
hazardous or Class I, Division 2 area, connect 
the tip and ring wires from the telephone 
company's terminal box to the TIP and RING 
terminals (1 and 2 respectively). 
If it is installed in a Class I, Division 1, Group 
D area, install the unit per the reference 
drawing shown Appendix E. Also see 
Appendix D for proper jumper settings. 
Installation of the phone line surge protection 
device provided with the MTEK6000 is 
strongly recommended when the MTEK6000s 
internal modem is connected to a telephone 
line. The device is a separate gas tube type 
phone line surge suppressor and is housed in 
its own enclosure suitable for mounting 
directly to a telephone pole or other structure. 










