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MM4006
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EDF10181En1020 — 03/03
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3.1.2 I E E E -488 Interface
See Appendix B: "IEEE-488 Link Characteristics".
Hardware configuration
The IEEE-488 interface has a well defined hardware configuration. The
MM4006 conforms to the standard so you simply need t o connect the
proper cable to the clearly identified connector on the back panel.
Communication protocol
The IEEE-488 i n t e r f a c e i s i m p l e m e n t e d o n t h e MM4006 somewhat
differently than on a typical instrument. The standard IEEE-488 command
set and command format are inadequate for a complex motion controller.
Since the MM4006 has its own language and command set, the IEEE-488 is
used o n l y as a communication p o r t . T h e extended p r o t o c o l is n o t
supported. The only exception is the use of the SRQ line, which permits
more reliable data transfer, especially when downloading large amounts of
data (trace data, large programs, etc.) The SRQ can be enabled or disabled
from the General Setup menu on the front panel.
The main setup requirement for an IEEE-488 device is to select the proper
address. This identifies the unit to the other devices connected to the
system.
To change the address or the SRQ usage, follow the instructions in the
Controller Configuration section of the Local Mode chapter.
3.1.3 R S -232-C Interface
The RS-485 interface permits:
• T h e communication between a single computer to a single MM4006
c o n t r o l l e r i n l o n g distance ( s e v e r a l h u n d r e d - m e t e r s ) o r n o i s y
environment high speed communication.
• T o meet the requirements for a multi-drop communication network up
to 31 MM4006 controllers.
Hardware configuration
The RS-485 communication p o r t is a 10-pin connector. The MM4006
controller is equipped with 2 identical connectors connected in parallel,
located on the rear panel. The pinout is designed to interface directly with
an IBM PC or compatible computer, using a one-to-one cable. No special
adapters are required.
Appendix C shows the pinout of the RS-485 connector.
Communication protocol
The RS-485 interface must be p r o p e r l y configured o n both devices
communicating. A correct setting is one that matches all parameters
(address, baud rate, number of data bits, number of stop bits, parity type
and handshake type) for both devices.
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