Scanlab RTC 5 PC Interface Board, Installation And Operation Manual

Page: 266 / 622

RTC
®
5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
266
innovators for industry
Ctrl Command get_head_status
Function returns the XY2-100 status word from the specified scan head connector .
Call
get_head_status( Head )
Parameter
Head
= 1: returns the status of the primary scan head connector
(Byte #1 = Byte #0)
= 2: returns the status of the secondary scan head connector (activation
required) (Byte #1 = Byte #0)
else: returns the status of the primary scan head connector (Byte #0)
and of the secondary scan head connector (Byte #1).
Result XY2-100 status word (as an unsigned 32-bit value):
Byte #0 (LSB) Bit #0 (LSB) 1
Bit #1 0
Bit #2 1 (reserved)
Bit #3 Position Acknowledge of X axis, 1 = OK
Bit #4 Position Acknowledge of Y axis, 1 = OK
Bit #5 1 (reserved)
Bit #6 Temperature Status, 1 = OK
Bit #7 Power Status, 1 = OK
Byte #1 Bits #8…#15 bit assignments as with Byte #0
Bytes #2…#3 Bits #16…#31 0
Comments • The get_head_status command doesn’t read the “normal” 20-bit status word, but
rather the permanently transmitted additional 6 status bits of the SL2-100 protocol
(also via the XY2-100 converter) (see
page 127 ). The status bits are returned via
get_head_status in bits#2-7 and/or bits#10-15. Independently of the scan system’s
current state, bits#0 and 8 are returned via get_head_status as 1, while bits#1 and 9
are returned as 0.
• If no scan system is currently connected, then the status of the most recently connected
system will be returned. If a scan system is still not connected after a reset (power-on
or
load_program_file ) or if (for
Head
= 2) the “second scan head control” option has
not been enabled, then get_head_status returns the value 0. If only the XY2-100
converter is connected, then get_head_status returns a 0xFD byte (“everything OK”).
In this case, get_startstop_info can be used for distinguishing between “everything
OK” and “no scan system”.
• The Power Status and Temperature Status signals deliver combined status information
of both axes.
• It’s also important to consider all the status signal information described in your scan
system’s operating manual.
• When using an i DRIVE
®
scan system (intelli SCAN
®
, intelli SCAN
de
®
, intelli DRILL
®
,
intelli cube
®
, intelli WELD
®
, vario SCAN
de
),
– Without the SL2-100 interface, get_head_status only returns meaningful return
information if the XY2-100 status word was selected for return transmission.
– the Position Acknowledge signals of the X- and Y-axis are logically AND-connected
and only returned as a common signal (e.g. at bit#3,4). Here, in addition, the Posi-
tion Acknowledge signals of the X- and Y-axis can be separately read out via the com-
mand
control_command with data = 0528
H
at flag bit#12.
– after a reset or power-up of the scan system, it can take around 5 seconds for data
to be returned from the scan system.