110-392
32
RS-232 / RS-485 Communications
Serial Connector — A 9-pin D-connector (optional) is provided on the back panel of the Chiller for RS232 / RS485
data communication. A serial cable that uses only the following pins should be used to connect the Chiller to the
computer:
RS-232
RS-485
Pin # 2
data read (data from computer)
Pin # 3
DAT (+) on “B”
Pin # 3
data transmit (data to computer)
Pin # 5
signal ground
Pin # 5
signal ground
Pin # 9
DAT (-) on “A”
RS-232 / RS-485 Protocol — The controller uses the following RS-232 / RS-485 protocol:
Data bits — 8
Parity — none
Stop bits — 1
Flow control — none
Baud rate — selectable (Chiller and PC baud rates must match).
Communications Commands — Commands must be entered in the exact format shown. Do not send a [LF] (line
feed) after the [CR] (carriage return). Be sure to follow character case exactly. A question mark (?) indicates that
the Chiller could not execute the command (either because it was in an improper format or the values were
outside the allowable range). A response followed by an exclamation point (!) indicates that a command was
executed correctly. A response must be received from the Chiller before another command can be sent. All
responses are terminated with a single [CR].
Command Description
Command
Format
Values
Return Message
Set command echo
SEi[CR]
Echo: i = 1
No Echo: i = 0
![CR]
Set On / Off
SOi[CR]
On: i = 1
Off: i = 0
![CR]
Set set point
SSxxx[CR]
x = ASCII digit
![CR]
Read set point temperature
RS[CR]
![CR]
Read temperature
RT[CR]
![CR]
Read temperature units
RU[CR]
C or F
C[CR] or F[CR]
Read status
RW[CR]
1 = Run
0 = Standby
1[CR] or 0[CR]
Read pressure in PSI
RP[CR]
![CR]
Read pressure in kPa
RK[CR]
![CR]
Read flow in GPM
RG[CR]
![CR]
Read flow in LPM
RL[CR]
![CR]
Read remote control voltage
RC[CR]
![CR]
Read remote temperature probe
RR[CR]
![CR]
Read ambient temperature on PCB RA[CR]
![CR]
Read fault status
RF[CR]
![CR]
Read line voltage
RV[CR]
![CR]
Read internal temperature
R1[CR]
![CR]
Read external temperature
R2[CR]
![CR]
Содержание DuraChill 58 Series
Страница 1: ...User Guide DuraChill Air and Water Cooled 1 5 HP Chillers 110 392 27 June 2016...
Страница 2: ......
Страница 32: ...110 392 30 Electrical Specifications...
Страница 39: ...110 392 37 Appendix Flow Schematic All Models...
Страница 40: ...110 392 38 Electrical Diagram 208 230V 1PH 50 60Hz Models without heater option...
Страница 41: ...110 392 39 Electrical Diagram 208 230V 1PH 50 60Hz Models with heater option...
Страница 42: ...110 392 40 Electrical Diagram 208 230V and 380 460V 3PH 50 60Hz Models without heater option...
Страница 43: ...110 392 41 Electrical Diagram 208 230V and 380 460V 3PH 50 60Hz Models with heater option...
Страница 45: ...110 392 43 DI Control Wiring H2 H3 Option Wiring H2 24 VDC H3 12 VDC...
