Controls And Features Of The Im 308-C Master Interface - Siemens SIMATIC S5 Manual

Controls and The controls and features of the master interface are as follows:
features
Table 3-1

Controls and features of the IM 308-C master interface

Designation Function
Backplane con- Backplane connectors X1 and X2 enable communication between the IM 308-C
nectors X1 and X2 and the CPU via the S5 I/O bus.
Memory card All important configuration data for the IM 308-C and the bus layout is stored on
the memory card.
Mode selector
The mode selector switch is a three–position switch:
switch it h
IM 308-C as DP master:
RN (RUN): normal operation;
IM 308-C reads the inputs of the
slaves and sets the outputs.
ST (STOP): IM 308-C does not
exchange data with the slaves; it
may, however, receive the token
(send authorization) from
another master on the bus and
pass on the token.
OFF: IM 308-C does not ex-
change data with the slaves and
cannot receive the token (send
authorization) from another
master on the bus.
LEDs The meanings of the LEDs are shown in Tables 3-2 and 3.3.
SINEC L2 DP The bus connectors of the field bus connect to the IM 308-C via the SINEC L2
interface (X3) DP.
Jumper X10 SINEC L2 DP grounded or not grounded (see Section 3.3)
ET 200 Distributed I/O System
EWA 4NEB 780 6000-02a
IM 308-C master interface and memory card
IM 308-C as DP slave:
RN (RUN): normal operation; IM 308-C is
DP slave and exchanges data with the DP
master.
ST (STOP): IM 308-C is DP slave and does
not exchange data with the DP master.
Depending on parameterization with
COM ET 200 Windows, QVZ or PEU is re-
ported to the master CPU.
Bit 0, station status 1 is set;
OFF: IM 308-C is DP slave and does not ex-
change data with the DP master.
No exchange of data between the
IM 308-C/DP slave and the slave CPU.
3
3-3