GE GFK-1541B manual

3

(Word 18) Remote PLC - Network Address Type: Word 18 specifies the format of the remote PLC address. Currently, Word 18 must contain the value 1 or 3. A value of 1 indicates a dotted- decimal IP address expressed using a separate register for each decimal digit. A value of 3 indicates a Network Address name. See Example 2 for information on using address type 3.

(Word 19) Remote PLC - Network Address Length: Word 19 specifies the length in words of the remote PLC IP address. When an address type of 1 is specified in Word 18, Word 19 must contain 4.

(Words 20–23) Remote PLC - IP Address: Words 20–23 specify the four integers, one integer per word, of the dotted-decimal IP address of the remote PLC to be accessed.

(Words 24–27) Remote PLC - Program Name: Words 24–27 specify the case-sensitive, zero- terminated and padded program name (also called task name, which can be found through the PROG Station Manager command on the server Ethernet Interface) to be used with access to remote %P or %L memory. These words are required only for access to such memory and will be ignored if the Memory Type field is not %P or %L.

(Words 28–31) Remote PLC - Program Block Name: Words 28–31 specify the case- sensitive, zero-terminated and padded program block name (which can be found in the program block declaration in the server ladder program) to be used with access to remote %L memory. These words are required only for access to such memory and will be ignored if the Memory Type field is not %P or %L.

Note

The Program Name (Words 24–27) and Program Block Name (Words 28–31) must have each pair of ASCII characters reversed within the PLC memory. For example, the name “MARY” (“M” = 4DH, “A” = 41H,

“R” = 52H, “Y” = 59H) would have 414DH in the first word and 5952H in the second word.

3-20 TCP/IP Ethernet Communications for the Series 90™ PLC User's Manual– May 2002 GFK-1541B