Celestron CGEM DX, Instruction Manual

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25
a
ppendIX
C - rs-232 C
onneCTIon
Description PC Command ASCII Hand Control Response Notes
Echo Kx x#
Useful to check
communication
Goto Azm-Alt B12AB, 4000 #
10 characters sent .
B=Command, 12AB=Azm,
comma, 4000=Alt . If
command conflicts with
slew limits, there will be
no action .
Goto Ra-Dec R34AB, 12CE #
Scope must be aligned .
If command conflicts with
slew limits, there will be
no action .
Get Azm-Alt Z 12AB, 4000#
10 characters returned,
12AB=Azm, comma,
4000=Alt, #
Get RA-Dec E 34AB, 12CE# Scope must be aligned
Cancel Goto M #
Is Goto in Progress L 0# or 1#
0=No, 1=Yes; "0" is ASCII
character zero
Is Alignment Complete J 0# or 1# 0=No, 1=Yes
Commands below
available on version
1.6 or later
HC version V 22 Two bytes representing V2 .2
Stop/Start Tracking
Tx
x = 0 (Tracking off)
x = 1 (Alt-Az on)
x = 2 (EQ-N)
x = 3 (EQ-S)
#
Alt-Az tracking requires
alignment
32-bit goto RA-Dec r34AB0500,12CE0500 #
32-bit get RA-Dec e 34AB0500,12CE0500#
The last two characters will
always be zero .
Commands below
available on version
2.2 or later
32-bit goto Azm-Alt b34AB0500,12CE0500 #
32-bit get Azm-Alt z 34AB0500,12CE0500#
The last two characters will
always be zero .
t
he Cable requireD to interFaCe to
the telesCoPe has an
rs-232
Male Plug at one enD anD a
4-4
telePhone jaCk at the other enD
. t
he wiring is as Follows
:
4-4 Modular
Phone Jack
DB9 Pin 3
PC Transmit
DB9 Pin 2
PC Recieve
DB9 Pin 5
Ground