Micromod Micro-DCI: 53MC5000 PLC AND PRINTER INTERFACES - Manual (Page 93)

8.0 KOYO MODE
8.1 PURPOSE
The Koyo interface application permits data transfers between the Process Control Station (PCS)
and an addressed Koyo Programmable Logic Controller (PLC) or a Koyo vended PLC for compa-
nies such as General Electric, GE Fanuc, Texas Instruments, and Siemens (e.g., Series One
, Se-
ries One  PLUS, Series One Junior, Series 305, Series 405, SIMATIC
®
TI305 , and
SIMATIC
®
TI405  PLCs). Data transfers are via the Koyo DirectNET communications protocol.
8.2 INSTALLATION CONFIGURATIONS
As shown in Figure 8-1, the PCS supports point-to-point and multidrop installation configurations.
In a multidrop configuration, communication with network PLCs is bidirectional with one node; how-
ever, the read and write functions can be separated across two PLCs if necessary. Communicat-
ing with other network PLCs requires reconfiguring the PCS with their network addresses.
RS-485
Point-to-Point
Multidrop
NOTE
WHEN KOYO PLCs ARE INSTALLED IN A MULTIDROP CONFIGURATION,
TB2 OF THE RS-232/485 BOARD MUST BE USED. TB-2 IS FOR THE
RS-485 (422) INTERFACE. ALL BUT THE DL240 KOYO PLC HAVE
MULTI-PIN D-CONNECTORS THAT SUPPORT BOTH RS-232 AND RS-422.
WHEN USING THE KOYO DL240 PLC, THE USER MUST SUPPLY
RS-232-TO-RS-422 CONVERTERS FOR EACH PLC ON THE NETWORK.
Figure 8-1. Installation Configurations
53MC5000
PCS
RS-232/485
ITB KOYO
PLC
53MC5000
PCS
MASTER
RS-232/485
ITB KOYO
PLC
KOYO
PLC
(TO BE READ)
(TO BE WRITTEN)
Section 8. Koyo Mode
KOYO
8-1