Vers. No. 6.1
24 Released: 25/04/2017
4 Connecting the modules → Connecting the base
Chapter 5, Configuration, Section 5.2. Also for a configuration
via the DIP switches an address set via the PC is retained in the
module and i
s used again when the DIP switches are set to the
address 0.
1)
OFF = Switch down, ON = Switch up (Fig. 4-1)
The addresses 33 to 63 cannot be used via Q.gate or Q.pac. They
are only available with the direct connection of a PC or a PLC;
refer also to Section 4.4.5, Connect
ing modules directly to a PC/
PLC.
➡ A base which is used to accommodate a Q.gate Test Controller
requires no address.
4.1.3 Activating the terminating resistances
The terminating resistances must be activated on the last base of
each interface line (and only there), because the end of the line
must be terminated with two resistors (termination). Otherwise
reflections occur on the line and lead to disturbances, even to the
loss of data transmission.
➡ If the base is intended for accepting a Q.gate module, the termi-
nating resistances must not be activate
d, because this module
contains its own resistances.
• Push the DIP switches 9 and 10 upwards to activate the termi-
nating resistances (r
efer to Fig. 4-1 on page 22).
The resistances are only activated for the lines of UART 1A and
UART 1B, bec
ause it is only these lines which are used by the
modules. The li
nes for UART 2A and UART 2B are just passed on
Address S1 S2 S3 S4 S5 S6
0
OFF
1
OFF OFF OFF OFF OFF
1
ON
1
OFF OFF OFF OFF OFF
2 OFF ON OFF OFF OFF OFF
3 ON ON OFF OFF OFF OFF
4 OFF OFF ON OFF OFF OFF
5 ON OFF ON OFF OFF OFF
… ………………
30 OFFONONONONOFF
31 ON ON ON ON ON OFF
32 OFF OFF OFF OFF OFF ON
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