ETS-Lindgren HI-4416 Numeric EMF Readout Unit - Manual (Page 29)

www.ets-lindgren.com HI-4416 Operating Protocols 29
Appendix C: HI-4416 Operating Protocols
Communication between the probe and the HI-4416 System Read Out is carried
out via an ASCII data string. The probe requires a dual fiber optic cable and only
responds when commanded. The HI-4416 continuously (at 7.6 Hz) sends the
probe a command for data and waits for a response. If a key that requires
information from the probe is pressed, the HI-4416 will send the appropriate
command to the probe and wait for a response.
C OMMUNICATION P ROTOCOL
Data Type: RS-232 Serial
Data Mode: Asynchronous
Word Length: 7 bits
Parity: odd
Stop Bits: 1
Data Rate: 9600 baud
P ROBE D ATA F ORMAT
The data sent to the HI-4416 is formatted as SDxx.xxuuugggobaaat:
S Start Character (":")
D Type Indicator ("D" = Controller, "#" = Listen Only)
xx.xx Probe Reading (4 digits plus floating decimal)
uuu Units of Measure (see next page for valid unit indicators)
ggg Recorder Output/Bar Graph (0 - 255)
o Over Range Indicator ("N" = Normal, "O" = Over Range)
b Battery Status ("N" = Normal, "W" = Warning, "F" = Fail)
aaa X-,Y-,Z-Axis (respectively) enable flag
("E" = Enabled, "D" = Disabled)
t Terminating Character (Return)