Siemens TC12 Installation, Commissioning And Maintenance Handbook page 26

The second cable is attached from the connector labelled J2 or P2 on the DIGI I/O
Card to connector PL3 on the PSU board, (the PSU board has a note on the silk
screen next to PL3 which reads 'CONNECTION TO P2 DIGI I/O (PC)'.
Note: The two 50-way ribbon cables are to be connected to the card before it is
installed into the PC.
WARNING
2.2.2.8 IMD cards and cables
There are 3 different types of IMD cards and distribution unit which have been
used in TC12 Instations. Their differences and installation is described below:
2.2.2.8.1 DIGI PC/16i
The DIGI PC/16i comprises a full length ISA card (DIGI part number 50000160)
and an IMD Distribution Unit (labelled PC/16I I/O MATE INTERFACE). The PC
board has 3 jumpers (J1, J2 and J3) and 2 DIP switches (DS1 and DS2).
The 3 jumpers are used to set the local program memory size, which should be
64K. Each of the 3 jumpers has 3 pins which are numbered from top to bottom.
Each jumper should be set so that pins 2 and 3 are bridged.
Set the address of the dual-ported RAM to E0000 using DIP switch 1 (DS1)
positions 1 to 8, as shown below:
Address
E0000
D0000
A0000
[ON = PUSH SWITCH DOWN]
If, when the program is run, an address error is reported, the next available
address from the three listed above, should be tried.
If, more than one IMD board is installed in a TC12 PC, the address of the dual-
ported RAM on each board be set the same.
666/HE/43100/000
TC12 Installation, Commissioning & Maintenance Handbook
Please ensure cables are connected correctly, as they are not
polarised. After installation the cables should be labelled to show
which is connected to P1 and which is connected to P2.
SW1 SW2 SW3
ON OFF OFF
OFF ON OFF
ON OFF ON
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SW4 SW5 SW6
OFF ON ON
OFF ON ON
OFF ON ON
SW7 SW8
ON ON
ON ON
ON ON
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