GE Monogram GFK-1115 SNP 90 Protocol Parameters Definition in PCS, Global data starting reference

4

❏Global data starting reference*

This parameter must be set only if you will be communicating with a Series Six or Series Five PLC. It specifies the offset within the Series Six/Five register memory where global data broadcast by the C400 Controller is to be placed. Note that this parameter affects all Series Six and Series Five PLCs on the Genius bus. You should set this offset within the range of 1 — 16384, inclusive, to specify a fixed register offset. If you wish the offset to be calculated by the C400 Controller based on its own bus device address, leave the offset specified as 0. In this case, the actual offset will be calculated according to the formula

(BusAdr * 64) + 1

where BusAdr is the serial bus device address of the C400 Controller when it powers up on the Genius bus. This calculation will yield offsets as seen in the table below:

C400 Bus Address

0

1

2

.

.

.

31

Global Data Starting

Reference

1

65

129

.

.

.

1985

SNP 90 Protocol Parameters (Definition in PCS)

For details on using SNP90 communications with the C400 Controller, refer to the PANELWARE MMI Application Manual for GE Fanuc Series 90 Protocol (SNP) — GFK-0850.

GFK-1115 Chapter 4 Configuring Communication with the PLC 4 - 9