Galil DMC-2X00 - Manual (Page 56)

Error Output
The controller provides a TTL signal, ERROR, to indicate a controller error condition. When an error
condition occurs, the ERROR signal will go low and the controller LED will go on. An error occurs
because of one of the following conditions:
1. At least one axis has a position error greater than the error limit. The error limit is set by
using the command ER.
2. The reset line on the controller is held low or is being affected by noise.
3. There is a failure on the controller and the processor is resetting itself.
4. There is a failure with the output IC which drives the error signal.
Extended I/O of the DMC-2x00 Controller
The DMC-2x00 controller offers 64 extended TTL I/O points which can be configured as inputs or
outputs in 8 bit increments. Configuration is accomplished with command CO - see Chapter 7. The
I/O points are accessed through the 80 pin high density connector labeled EXTENDED I/O.
Interfacing to Grayhill or OPTO-22 G4PB24:
The DMC-2x00 controller uses one 80 Pin high density connector to access the extended I/O. This
connector is accessed via the Galil CABLE-80. The Galil CABLE-80 can be converted to (2) 50 pin
ribbon cables which are compatible with I/O mounting racks such as Grayhill 70GRCM32-HL and
OPTO-22 G4PB24. To convert the 80 pin cable, use the CB-50-80 adapter from Galil. The 50 pin
ribbon cables which connect to the CB-50-80 connect directly into the I/O mounting racks. The CB-
50-80 adapter board is described in the appendix.
When using the OPTO-22 G4PB24 I/O mounting rack, the user will only have access to 48 of the 64
I/O points available on the controller. Block 5 and Block 9 must be configured as inputs and will be
grounded by the I/O rack.
46
• Chapter 3 Connecting Hardware
DMC-2X00