Manual – Fieldbus Interface INTERBUS UFI11A
51
8
DIP Switches
8 DIP Switches
PD1 – PD5
Binary setting of the process data length
The following example shows how the DIP switch settings are determined for a process
data length of 17. Divide each required process data length by the number two and
make a note of the remainder. The remainder can only be 0 or 1. This corresponds to
the setting of the DIP switches.
PCP 1, 2
You can set the lengths of the PCP channel in words using these two DIP switches. Pos-
sible values are 0, 1, 2 and 4 words.
Process data
length
Please note that INTERBUS does not support all data lengths which can be set. The to-
tal data length of process data and PCP words can be 1 – 10, 12, 14, 16, 24, 26 and 36
words.
If you require a number of words which lies between these settings, the next higher num-
ber must be used. For example, 9PD + 4 words PCP results in 14 words.
AUTO SETUP: See Sec. Quickstart without PC
05376AXX
Fig. 26: DIP switches
Table 1: Example for determining the DIP switch settings for process data width 17
Calculation Remainder DIP switch setting Significance
17 ÷ 2 = 8 1 X1 = 20 = ON 1
8 ÷ 2 = 4 0 X2 = 21 = OFF 2
4 ÷ 2 = 2 0 X3 = 22 = OFF 4
2 ÷ 2 = 1 0 X4 = 23 = OFF 8
1 ÷ 2 = 0 1 X5 = 24 = ON 16
PCP 1 PCP 2
OFF OFF 0
ON OFF 1
OFF ON 2
ON ON 4
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