CS SR50A, Инструкция по эксплуатации

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Appendix B. Example Programs
B-16
EndIf
NextScan
EndProg
B.4 Heater Program Examples
The following programs are written for a SR50AH-L configured for SDI-12.
Detailed information about the heater is provided in Appendix F , SR50AH
Heater Operation
(p. F-1)
.
TABLE B-7. Wiring for CR1000 and CR6 Heater Example Programs
107-L Air Temperature Sensor Wiring
Wire Color Sensor Wire Description CR1000 Wire Channels CR6 Wire Channels
Black Voltage-excitation input VX1 U2
Red Analog-voltage output SE1 U1
Purple Bridge resistor lead
⏚ ⏚
Shield EMF shield
⏚ ⏚
SR50A-L Configured for SDI-12 Wiring
Wire Color Sensor Wire Description CR1000 Wire Channels CR6 Wire Channels
Red Power source
12V 12V
Green SDI-12 I/O
C1 C1
White Not used
G G
Black Ground
G G
Shield Shield/Earth ground
G G
SR50AH Heater Power Cable
Wire Color Heater Wire Description CR1000 Wire Channels CR6 Wire Channels
Black Power source
SW-12 SW12-1
White Power ground
G G
Shield Shield/Earth ground
⏚ ⏚
CRBasic Example B-6. CR1000 Heater Program Example
'CR1000
'This program contains a number of features not found in Short Cut.
'
'The initial distance value from the SR50A head to the ground is
'measured by setting the flag SR50A_MID to TRUE. Set this flag after
'installing the SR50A in the field. Setting this flag will initiate
'a measurement cycle and the resulting value stored as the initial
'distance. The initial distance is used to calculate snow depth.
'The PreserveVariables instruction is used to store the initial
'distance in non-volatile memory. If power is lost at the site the
'initial distance value will be restored.'
'A control flag is used to initiate the SR50A measurement cycle. This