Executive Nv Flash Memory And Ram; Executive Functionality - Black & Decker d984 Installation Manual

Executive NV FLASH Memory and RAM
The PLC' s feature executive firmware as two levels of memory which are referred
to in this manual as executive and user memory. The executive is contained in
Non-Volatile flash memory that can be upreved in the field if required, and the
user memory is stored in battery backed RAM. (Refer to the Customer Service &
Technical Assistance section located in Appendix B regarding upgrading NV
FLASH Memory in the field.)
A controller bootable memory software is downloaded to a protected area of flash
memory during the manufacturing process which is not accessible to the user.
Executive Functionality
381
Executive ID of 813 (Hex), CPU Clock speed 12 Mhz.
24 DX functions:
MOVE (8), MATRIX (8), JSR, RET, LAB, PID2, EMTH, TBLK, BLKT, and
CKSM.
Two standard Modbus ports, Time-of-Day clock, Local l/O only.
385
Executive ID of 81 E (Hex), CPU Clock speed 12 Mhz.
24 DX functions:
MOVE (8), MATRIX (8), JSR, RET, LAB, PID2, EMTH, TBLK, BLKT and
MSTR.
(MSTR is the user interface to Modbus Plus. It replaces the CKSM function
and uses its opcode.
One Modbus port, One Modbus Plus Port, Time-of-Day clock, Peer Cop,
Local I/O only.
480
Executive ID of 822 (Hex), CPU Clock speed 12 Mhz.
26 DX functions:
MOVE (8), MATRIX (8), JSR, RET, LAB, PID2, EMTH, TBLK, BLKT, READ,
WRIT and CKSM.
Two standard Modbus ports, Time-of-Day clock, Remote I/O.
GM-0984-EDK
Introducing your Controller
11