Siemens SIMATIC NET CP 243-1 User Manual

Configuration 09/02
CP 243-1
42 J31069-D0428-U001-A1-7618
4.4.3 Structure of the Network Parameter Blocks (NPB)
This data block is generated by the CP 243-1 itself in accordance with the current
set of network parameters. It contains the TCP/IP parameter values currently in
use, provided the CP 243-1 has been correctly configured. In the event of a con-
figuration error, the NPB will not contain any valid data.
Byte offset in
variables mem-
ory
Description Calculation of the
value
Data format Example
108-109 Common flag byte
Bit [0] Duplex Mode
0: Half Duplex
1: Full Duplex
Bit [1] Data Rate
0: 10 Mbit/s
1: 100 Mbit/s
Bit [2] Auto Negotiation
0: No auto negotiation
1: Auto negotiation
Bit [3] BOOTP
0: Use configured net-
work parameters
1: BOOTP
Bit [4-15] Not in use
Dependent on cur-
rent configuration
2 Byte Hex 16#04: Auto nego-
tiation,
use configured
network parame-
ters
110-113 Current IP address Dependent on cur-
rent configuration
4 bytes hex 192.12.45.23:
16#C00C2D17
114-117 Current subnet mask Dependent on cur-
rent configuration
4 bytes hex 255.255.255.0:
16#FFFFFF00
118-121 IP address of current Gate-
ways
Dependent on cur-
rent configuration
4 bytes hex 192.12.45.24:
16#C00C2D18
122-127 MAC address Read out from
hardware
6 bytes hex 16#080006021F04
08-00-06-02-1F-04
Table 4: NPB structure

Siemens SIMATIC NET CP 243-1 Specifications

General

Brand	Siemens
Model	SIMATIC NET CP 243-1
Category	Computer Hardware
Language	English