System information

Crestron 2-Series Control Systems Reference Guide
Reference Guide – DOC. 6256A 2-Series Control Systems • 89
Appendix B: Passthrough Mode
NOTE: This procedure requires the use of the Crestron Viewport.
Passthrough Mode allows a control system to act as a conduit to a device that is
serially connected to the Crestron system. Viewport can then serially communicate
with a controlled device separate from the control system program. This aids in
troubleshooting a serial device that is connected to the network by isolating the
device from the system or the program running in the control system without moving
any wiring.
NOTE: Before using the Passthrough Mode to connect to a serial port on an
Ethernet device, the IP ID and associated IP address of the Ethernet device must
be listed in the control system's IP table.
The Passthrough Mode cannot be used with Cresnet devices that utilize slots in the
SIMPL Windows programming symbol. For example the COM port on the
C2N-CAMIDSPT is designated as Slot 2, Port A. The Passthrough Mode cannot be
used to access this COM port. The COM ports on the ST-COM are not within slots
and can use Passthrough for these COM ports.
The System Views of SIMPL Windows shows the programmer if a COM port is a
port on a device or a port within a slot on a device. The following diagram shows the
System Views for a system with a ST-COM RS-232/422 COM Module and a
C2N-CAMIDSPT Digital Servo Pan/Tilt Head.
System View of ST-COM and C2N-CAMIDSPT
To enter the Passthrough Mode for connecting to serial devices:
1. After using Viewport to establish communication with the processor, select
Functions | Enter Passthrough Mode (CNX / 2-Series only).
NOTE: For instructions on establishing communications with the control
system, refer to the Viewport help file.