IBM CTI 2572 Network Card User Manual


 
CTI 2572 Installation and Operation Guide
53
The following Command block is used for O
PEN PASSIVE CONNECTION
Offset Description Hex Decima
l
0 Error Word 0000 0
1 Command Code 2E02 11778
2 Connection Number 4B15
4B1C
19221-
19228
3 Protocol Manager Number 2E 46
4 IP address of Partner High 16 bits
5 IP address of Partner Low 16 bits
6 Flags (Bypass Validity Checks = 0x01)
7 Length of local TSAP in bytes 1-10 1-10
8 Start V-memory address of local TSAP
9 Length of remote TSAP in bytes 1-10 1-10
10 Start V-memory address of remote TSAP
11-15 Unused
Command Code The number for this command is 0x2E02
Connection number The connection number must be unique and within the designated range.
Protocol Manager Number The number for this Protocol Manager is 0x2E
IP Address The IP address of the partner must match the entry in this command block (unless the
bypass checks flag bit is set). The IP address should be entered in hexadecimal format, with each
byte representing a dotted decimal octet. See Figure 12. Representing IP Address in Hexadecimal
Format.
Flags If this is set to 0x01 then the protocol manager will bypass checking the value of the Remote
TSAP and the partner IP Address. This should be done only for initial testing and debugging.
Local TSAP This is the TSAP associated with the connection in this PLC. You may select any
value but you must ensure that the value entered for Remote TSAP in the partner PLC matches this.
Remote TSAP This must correspond to the Local TSAP value in the partner PLC block (unless the
bypass checks flag bit is set).
NOTE:
TSAPs are case sensitive. If the case does not match, the connection will be rejected.