RTC
®
5 PC Interface Board
Rev. 1.9 e
4 Layout and Interfaces
41
innovators for industry
4.3 Interfaces to Scan System
4.3.1 Scan Head Connectors and
Transfer Protocol
The primary scan head connector SCAN HEAD and
the optionally activated secondary scan head
connector “2. SCAN HEAD” are available for digitally
controlling scan systems (see
). At
those connectors, scan-system control values are
transmitted and scan-system status signals received.
Each scan head connector can transmit data for up to
two axes. Consult your scan system’s operating
manual to determine which status signals are
generated by your scan system and how they can be
applied for monitoring purposes.
Data transfer between the RTC
®
5 and the scan
system is in accordance with the SL2-100 protocol.
SCANLAB can supply an XY2-100 converter for signal
transfer in accordance with the XY2-100 protocol
(see
"XY2-100 Converter (Optional)", page 42
).
If neither the “second scan head control” option nor
the 3D option is enabled (these options must be
enabled by SCANLAB), only the primary scan head
connector outputs signals for an XY scan system.
If the “second scan head control” option (but not the
3D option) is enabled, the secondary scan head
connector outputs the same signal types as the
primary scan head connector and two XY scan
systems can be simultaneously controlled via one
RTC
®
5.
If, instead, the 3D option (but not the “second scan
head control” option) is enabled, then a 3-axis scan
system can be controlled via the two scan head
connectors (if the primary scan head connector has
been assigned a 3D correction table). Signals can
then be outputted via the primary scan head
connector to an XY scan head – and via both channels
of the secondary scan head connector to the third
axis (Z axis).
If
both
options (“second scan head control”
and
3D
option) are enabled, then the user specifies which
signals (XY or Z) are to be outputted via which
connector when assigning the correction table (also
see
"2D and 3D Correction Files", page 122
).
If multiple RTC
®
5 boards with enabled 3D option are
installed in a PC, then that many 3-axis systems can
be simultaneously controlled.
For master/slave functionality, multiple RTC
®
5 boards
can be run – synchronously clocked – in one PC if the
command
has been executed on
all boards (see
"Master/Slave Synchronization",
and
Primary Scan Head Connector
shows the pin-out of the primary scan head
connector SCAN HEAD (D-SUB 9-pin female).
The differential
DATA OUT
output channel transmits
control values to the scan system. The differential
DATA IN
input channel receives the status signals
returned by the scan system.
Pin 2 supplies 3.3 V power for SCANLAB’s optional
XY2-100 converter or a POF converter for optical data
transmission (POF = Polymer Optical Fiber). This pin
should not be used for other purposes.
Secondary Scan Head Connector (Optionally
Activated)
The pin-out of the secondary scan head connector
“2. SCAN HEAD” (10-pin socket connector) is shown
in
The signals on this connector are optional and require
activation by SCANLAB for controlling a second 2-axis
scan system (via enabling the “second scan head
control” option) and/or for controlling a 3-axis scan
system (via enabling the 3D option) (see above and
4
(6) DATA IN –
(7) GND
(8) GND
(9) DATA OUT –
DATA IN+ (1)
+3.3 V (DO NOT CONNECT) (2)
NOT CONNECTED (3)
NOT CONNECTED (4)
DATA OUT+ (5)
Pin-out of the 9-pin female D-SUB connector (SCAN HEAD) for
scan head connection
5
DATA IN+
(1)
+3.3 V (DO NOT CONNECT)
(3)
NOT CONNECTED
(5)
NOT CONNECTED
(7)
DATA OUT+
(9)
(2)
DATA IN –
(4) GND
(6) GND
(8)
DATA OUT –
(10)
NOT CONNECTED
Pin-out of the on-board “2. SCAN HEAD” connector
