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Appendix
Due to the different System 1010/1020 meter configurations, there are 3 types of RS-232 communica-
tion cables employed. You can determine which cable is required for the your model flowmeter from
the table below. Be sure you have the appropriate cable available for use.
Meter Type
Weatherproof Portable
1010P/1020N
All NEMA4X
NEMA 4X with Expanded
I/O Module
All 1010X
For those who would prefer to make the cables themselves, the required parts (except for the
RS-232 connector for the 1010WP meter types) should be available at most computer or electronics
stores. You will find drawings of the terminations for these cables with the reference table below.
It provides the signal names, PC termination and 1010/1020 meter termination for each type of
flowmeter.
Also, in most computer stores or online, you will be able to find or you may already have a serial
"LapLink" cable or "Null Modem" cable. These cables can be used to communicate with the 1010P/
DP and 1020N systems.
If you purchased a 1010W model, you may have received the special connector used for the RS-
232 terminal in a packet included with your 1010W. This will enable you to construct the appropriate
cable for this meter type.
If you prefer to construct your own cable, the following conventions apply in the table:
PC: Refers to an IBM compatible, DB-9 serial Com port.
1010N: Includes all models (N, DN, MN, E, EXCEPT those with "A1" option). Termination is made
to the 1010N-2 I/O Data Module. Flowmeter end of cable is unterminated wire.
1010N With "A1" Option: Meters that carry "A1" option have 1010N-7 module installed that
houses a DB-9 connector for RS-232 communication.
1010P/1020N: Includes all models (P/DP). Termination is made to the RS-232 port DB-9 connector.
A DB-9 Female connector is needed to mate with the meter connector.
1010WP: Includes all models (WP, WDP except energy meters). Termination is made to the RS-
232 port on the connector panel. A special cable terminal is required and can be obtained from
Controlotron (Part #1015XWP).
1010X: Includes all models (X, DX). Termination is made to the 1010X-8 I/O module Terminal
TB2. Flowmeter end of cable is unterminated wire.
Cable Type
DB-9F – Amphenol
DB-9F – DB-9F
DB-9F – 3 Wire
DB-9F - DB-9F
DB-9F – 3 Wire
Controlotron Part Number
1015CPC-WP
1015CPC-P
1015CPC-N
1015CPC-P
1015CPC-N
B-2
1020NFM-1D
Notes
Except Energy
Use for Energy WP
For 1010N with "A1"
option (1010N-7 module)
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