Siemens CP 243-1 - Page 68

Configuration
3.4 Other options when configuring a CP 243-1
CP 243-1
68 Operating Instructions, 03/2012, C79000-G8976-C244-02
Byte offset in
variable memory
Description Data format Example
13-14 Common flag
• Bit [0] duplex mode
– 0: half duplex
– 1: full duplex
• Bit [1] data rate
– 0: 10 Mbps
– 1: 100 Mbps
• Bit [2] Autonegotiation
– 0: No autonegotiation
– 1: Autonegotiation
• Bit [3] aut. address assignment
– 0: use configured network
parameters
– 1: BOOTP/DHCP
• Bit [4] protocol
– 0: BOOTP
– 1: DHCP
• Bit [5-7] not used
• Bit [8-15] CRC validation
– 16#00 CRC check enabled
– 16#AC CRC check disabled
2 bytes, hex 16#0004:
Autonegotiation,
use configured network
parameters,
CRC check enabled
16#AC04:
Autonegotiation,
use configured network
parameters,
CRC check enabled
15-18 Configured IP address
This field should be set to
16#00000000 when BOOTP/DHCP is
being used.
4 bytes, hex 192.12.45.23:
16#C00C2D17
19-22 Configured subnet mask
This field should be set to
16#00000000 when BOOTP/DHCP is
being used
4 bytes, hex 255.255.255.0:
16#FFFFFF00
23-26 IP address of the gateway.
16#00000000 means: do not use a
gateway.
This field should be set to
16#00000000 when BOOTP/DHCP is
being used.
4 bytes, hex 192.12.45.24:
16#C00C2D18
27-28 Keepalive time parameter in
seconds
2 bytes, hex 16#001E:
30 seconds
S7 connection 0 section (If some bytes of this section are unused, pad them with16#00)