I haven't managed to find any info on the toolchanger board used in the Triac, but it was a special variant of the North East Electronics SMCU controller that talked to the main Triac controller through it's own special serial link.
Here is an extract from the manual I found on their website regarding the DIP switches on the SMCU (may or may not relate to the variant that controls the toolchanger
)
NOTE the LED it mentions is located on the PCB in the rear electrical cabinet, not the front panel - I think the "few shot flashes then off for a while" error indicators are valid, not sure about the other stuff about the LED though
https://www.nee-controls.com/legacy_downloads.html
Page - 37
Indicated System Errors
The unit includes a front panel indicator which has a number of uses.
At initial power up if the controller microprocessor is running and the EPROM checksum is correct the indicator
repeatedly flashes On for ¼ second, Off for ¼ second until the first RS232 command is received (if RS232 operation
selected by SW 7) or until the optional keypad is used (SW 7 Off). If at power up the EPROM checksum is
incorrect the indicator flashes On and Off 5 times a second.
If the controller is operating in RS232 mode (SW - 7 On) the indicator changes from On to Off or vice-versa for
each RS232 character received. In normal operation controlled by a host computer the indicator will glow dimly as
RS232 characters are received then will remain Off or On for the period between receipt of characters. Any error
conditions detected by the controller are transmitted to the host in a coded form (see section b).
If the controller is not operating in RS232 mode the initial flashing stops when the keyboard is operated. The
indicator then changes from On to Off or vice-versa each time the keyboard is operated.
Whilst the controller is executing a Dwell the indicator increases then decreases intensity once per second.
Whilst the controller is executing a Wait Until Input command the indicator flashes rapidly.
The indicator is also used to indicate a number of error conditions as follows:-
Error Indicator Operation
Overtravel Error 1 short flash on then off for 2.5 seconds repeated.
Stepper Drive Fault 2 short flashes on then off for 2.5 seconds repeated.
Datum 3 short flashes on then off for 2.5 seconds repeated.
Ext Stop pressed 4 short flashes on then off for 2.5 seconds repeated.
ROM RAM Data Error 5 short flashes on then off for 2.5 seconds repeated.
Command Error 6 short flashes on then off for 2.5 seconds repeated.
When the MC3E, (SMCU/SMCU+ version 007 onwards) is switched on the RS232 interface operates at 300 baud,
7 data bits and odd parity. Systems connected to a host computer should be initialised at this time with data from
the host. If the host computer does not operate at 300 baud, 7 data bits and odd parity the controller will indicate a
command error.
If the controller indicates a data error at power up the internally stored system parameters will have been corrupted;
the system must then be connected to the host computer and correctly initialised before use.
Setting of Internal Assign Switches and Links
The unit has internal switches which enable the unit to be set to operate in a number of different modes at initial
power on after the external ram has been cleared or after an external ram checksum error has been detected.
8 switches only are fitted, their function is as follows:-
SW 8 – Hardware Test Mode Select
If SW8 set On at Power Up SW4 to 1 are used as follows:-
SW4 SW3 SW2 SW1
Off Off Off Off - Not Used
Off Off Off On - Not Used
Off Off On Off - Read/Transmit status of Datums/Inputs
Off Off On On - Read/Transmit status of Overtravels/Link 1, 2
Off On Off Off - Read/Transmit status of Assign Switches
Off On Off On - Read/Transmit status of Ext. Keypad
Off On On Off - Read/Transmit status of Ext. Stop Drive Flts
Off On On On - Sequence Aux 1 to 4 and Spdl relays/LED
On Off Off Off - Execute Auto Test
On Off Off On - Do a 3 axis move
On Off On Off - Ramp D to A output
On Off On On - Checksum ROM and transmit checksum
On On Off Off - Test External RAM (if fitted)
On On Off On - Read/Transmit status of inputs 5 to 12
On On On Off - Sequence Aux 5 to 12
On On On On - Sequence Aux 13 to 20
If SW8 is Off:-
SW7 selects RS232 data transmission from controller if On
SW6 selects either ROM (if On) or RAM program execution from keypad
SW5 selects continuous program execution (if On) or wait for Start between program executions if Off.
On systems with battery backed RAM SW4 to 1 are not used.
On systems without battery backed RAM SW4 to 1 are used as follows:
SW4 selects parity checking of input RS232 data if ON
SW3 selects either Odd (if On) or Even parity for received and transmitted RS232 data
SW2 & SW1 select RS232 baud rate as follows:-
SW2 SW1 Baud Rate
Off Off 300
Off On 1200
On Off 4800
On On 9600
Use of PCB links:
Link 1 fitted for 11Mhz Xtal, remove for 14.756Mhz systems
Link 2 fitted on SMCU, remove on SMCU+
for the tool changer- it is for a TRIAC ATC 1990 PNC3 control. the switches are ranked 1-8 if anyone could tell me the correct settings that would be great... cheers...
