GE 90-30 PLC Series Installation And Hardware Manual page 421

Figure I-5. Multidrop Arrangement for Series 90-30 Redundant System
Configuring and Connecting a Programmer to a Multidrop Network
Each slave device on a multidrop system must have its own unique SNP ID (identification). The
SNP ID assignment is made with a programmer running GE programming software, or with
the Hand Held Programmer. Logicmaster, Control, or Versa Pro software packages all can be used
for this purpose. The following example uses Logicmaster. Please see your software user's
manual or on-line help screens for instructions. Regardless of what software you use, the basic
steps are:
GFK-0356Q Appendix I SNP Multidrop
Conn. B
Series 90-30 PLC
Conn. A
IC690ACC90
Serial Cable
Connect your programmer to each individual PLC or module on the multidrop system and
assign each one a unique SNP ID.
Connect your programmer to the multidrop system and select Multidrop for the programmer's
connection method.
In the programming software, select the SNP ID of the PLC or module you wish to connect to.
Conn. C
IC690CBL714A Cable
Series 90-30 PLC
I-5
I