Channel Master CM-5020 Specifications download pdf (Page 63)

Channel Master Operation Manual

P/N 95B-6001-00 (February 2006) page 55

CJ – SDI-12 Configuration

Purpose This command is used to enable SDI-12 communications.

Format CJ x,y,z

x – Enable/Disable (0 = Disable, 1 = Enable)

y – Address (The address can be any alphanumeric character)

z – English/Metric Units for output (0 = Metric, 1 = English)

Default CJ 0,0,0

Recommended Setting. Use as needed.

Description This command is used to enable SDI-12 communications for

data logging purposes only. It allows for configuration of the

SDI-12 Address and the units of the data returned from the

unit (English or Metric). The address, as specified by the

SDI-12 Specification v1.3, can be any alphanumeric character.

The data output can be in English or Metric Units. English

units are °F, ft, and ft/s. Metric Units are °C, m, and m/s.

Example

>CJ?

CJ 0,0,0 -------------- SDI-12 Configuration {En/Dis,Addr,E/M }

>CJ1,0,1

>CJ?

CJ 1,0,1 -------------- SDI-12 Configuration {En/Dis,Addr,E/M }

NOTES. The IU command controls the units for discharge data when

reported through the serial port (for example, if PD19 is enabled) (see “IU -

Output Units,” page 69).

The CJ command sets the units for the same data when reported by

SDI-12 (M9 command).

IU1,1,1,1,1 sets the same units as CJ1,0,0

IU2,2,2,2,2 sets the same units as CJ1,0,1

CK – Keep Parameters

Purpose Stores present parameters to non-volatile memory.

Format CK

Recommended Setting. Use as needed.

Description CK saves the present user command parameters to non-

volatile memory on the CPU board. The Channel Master

maintains data stored in the non-volatile memory (user set-

tings) even if power is lost. It does not need a battery. You

can recall parameters stored in non-volatile memory with the

CR0-command.

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Channel Master CM-5020 Specifications Page 63