Micromod Micro-DCI: 53MC5000 PLC AND PRINTER INTERFACES - Manual (Page 90)

7.5 SET-UP PROCEDURE
The Siemens PLC documentation must be referenced to install and configure the PLC.
1. Reference the 53MC5000 Process Control Station book listed in the Preface to install the PCS.
2. See Section 2 of this book to mount the RS-232/485 ITB and cable connect it to the PCS.
3. Figure 7-2 in this section provides information to fabricate a custom RS-232 cable required to
connect J1 of the ITB to the PLC.
4. See Section 2 of this book for the required power connections to the RS-232/485 ITB.
5. Define the PLC memory map as determined from the quantity of L-bytes and C-words to be
transferred between the PCS and PLC. The size and address locations of the PCS L- and C-
memory areas are defined in paragraph 3.1 and illustrated in Figures 3-1 and 3-2.
6. At the PCS, configure all of the appropriate DDI channel datapoints set by the user as follows:
PCS APB Setup Bytes (Table 7-1)
Mode (B290, B456) - 0 (to ensure interface is off.)
Baud Rate (B292, B458) - Set to match the PLC.
Set-Up (B293, B459) - Data format transfer protocol is set to match the PLC.
PLC Control and Status Bytes (Table 7-2)
Scan Time (B685, B661) - See Section 3.7 to calculate the Scan Time.
PLC Read (Fetch) Control Bytes (Table 7-3)
Starting PLC Memory Address Low and High Bytes (B665, B641, B666, B642) - Also,
see Section 3.4 to ensure these values are properly calculated.
Number of L-bytes to Read (B667, B643).
Number of C-words to Read (B668, B644).
Command Code (B669, B645)
PLC Write (Send) Control Bytes (Table 7-4)
Starting PLC Memory Address Low and High Bytes (B675, B651, B676, B652) - Also,
see Section 3.4 to ensure these values are properly calculated.
Number of L-bytes to Write (B677, B653).
Number of C-words to Write (B678, B654).
Command Code (B679, B655).
APB Setup Bytes (Table 7-1)
Mode (B290, B456) - 4 to start the Siemens PLC interface protocol.
RS-232/485 ITB
XMT (CR13) and RCV (CR14) LEDs alternately blink whenever there is PCS-PLC
activity.
53MC9015 53MC5000 PLC and Printer Interfaces
7-6
SIEMENS