6-8
Connecting TM I/O to PCS 7
C79000-G8076-C710-04
6.3.2 Configuration of the I/O slots
The I/O slots are separated electrically and, with regard to signals, in a 3 : 2
ratio. This is why they can be configured separately. This includes the speci-
fication of position numbers as well as activation of pull-up resistors for
stand-slone applications.
Slots 1, 2 and 3 (Bus A) are wired to ribbon cable connector X12, slots 4 and
5 (Bus B) to ribbon cable connector X34.
To activate the pull-up resistors for stand-alone mode, insert the jumpers ac-
cording to the table below.
You can reach the jumpers from the front (see Figure 6-6).
Jumper Pull-up Signal
X52 1 - 3 ON PMEMR_N_A
3 - 5 OFF
X52 2 - 4 ON PMEMW_N_A
4 - 6 OFF
Jumper Pull-up Signal
X53 1 - 3 ON PMEMR_N_B
3 - 5 OFF
X53 2 - 4 ON PMEMW_N_B
4 - 6 OFF
The pull-up resistors are switched off by default.
Caution
Do not switch on the pull-up resistors if you connect an expansion unit EU
or an ES 100 K expansion system!
Terminating resis-
tors
Mi
ration rack II
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