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CS225 Temperature String

TABLE 7-3 SDI-12 Commands for the CS225

SDI-12

Command

Variable Name

Description

aR0!

Temperature value

Temperature

- floating point (°C)

aR1!

Serial number, location number,

depth value (in cm)

Serial number, location number, depth

value (in cm)

aR2!

Read user resettable min temperature

Min. temperature - floating point (°C)

aR3!

Read

user resettable max t

emperature

ax. temperature -

floating point (°C)

aR4!

Read lifetime min temperature

Min. temperature - floating point (°C)

aR5!

Read lifetime max temperature

Max. temperature - floating point (°C)

aR6!

Read &

reset user resettable min

temperature

Min. temperature - floating point (°C).

This value constitutes the minimum of all

1 second measurements taken since the

previous aR6! Command.

aR7!

Read &

reset user resettable max

temperature

Max. temperature - floating point (°C).

This value constitutes the maximum of all

1 second measurements taken since the

previous aR6! Command.

aV!

Verification command

S1 = BootRom Signature

S2 = Firmware Signature

aAb!

Change Address command

Valid addresses

in sequence are:

-9 / A-Z / a-z (no Address 0)

Sending a broadcast

message with the

address change

“{“

can correct units that

have conflicting addresses.

aI!

SDI-12 Identification command

X13CAMPBELLCS225 1.0 SN:XXXXX

7.2.1 SDI-12 Addressing

The CS225 comes pre-programmed with addresses from the factory. However,

if ever needed the address of temperature sensors can be changed. This may be

necessary if two CS225 strings need to be placed in the same SDI-12 channel

in order to avoid duplicate addresses on the same SDI-12 channel.

The starting address will be 1 and this will coincide with the first temperature

sensor, which is located at the end of the sensor array. It is recommended to

start the readdressing process with the largest temperature sensor address to

avoid duplicate addresses.

When readdressing temperature sensors you must avoid giving

multiple sensors the same address. If this does occur you will no

longer be able to communicate with these sensors. Use the

“aA{!” Command, where “a” is the affected address. This will

reset the affected sensors to their factory configured address

value.

NOTE

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 24 25

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