New Features Of Im 308-C - Siemens SIMATIC S5 Manual

IM 308-C Table 13-2 shows how the IM 308-C differs from its predecessor, the
IM 308-B:
Table 13-2 New features of IM 308-C
Number of DP
masters
Station numbers
Control commands
(global control)
Extended diagnostics
options
Memory card
Upgrading the
IM 308-C
Bus
Table 13-3 shows the new features introduced for the SINEC L2 DP bus.
Table 13-3 New features in conjunction with the SINEC L2 DP bus
Baud rate
Bus connectors
RS 485 repeater
Possible station
numbers
ET 200 Distributed I/O System
EWA 4NEB 780 6000-02a
Upgrading to COM ET 200 Windows or to IM 308-C
Property
The number of DP masters is no longer restricted
to 3, as it was in earlier versions of COM ET 200.
The station numbers for an IM 308-C are freely
assignable (1 through 123 and 119 through 107).
The IM 308-C can send FREEZE and SYNC
commands to synchronize the DP slaves.
Depending on the DP standard slave, a maximum
40 bytes are available for diagnostic messages.
All parameterized data of a master-system
configuration is stored on a high-capacity memory
card (128 kbytes).
In future, the firmware of the IM 308-C can be
upgraded using memory cards. It is no longer
necessary to remove the IM 308-C from the
system and return it to a Siemens supplier.
( IM 308-C release 3 and higher)
Property
The choice of baud rates now includes 3 Mbaud,
6 Mbaud and 12 Mbaud.
The bus connectors are more compact and it is now
easier to tell whether the terminating resistor is
activated or deactivated.
There are more compact RS 485 repeaters that you can
use for all baud rates up to 12 Mbaud.
Station numbers between 1 and 123 can be assigned to
all DP masters and DP slaves.
New feature
New feature
13
13-3