Yaskawa MP900 Series Machine Controller for Standard Operation - Manual (Page 142)

3.5 MP920 Module Definitions
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3.5.8 217IF Transmission Definitions
This section explains how to set the parameters for the 217IF Transmission System.
„ Outline of 217IF Transmissions
The 217IF Module is a Serial Transmission Interface Module equipped with two RS-232C
circuits and one RS-422/485 interface circuit. Each interface supports various transmission
protocols, beginning with Yaskawa's own MEMOBUS transmission protocol. The RS-232C
CN1 D-sub 9-pin connector can be used as an engineering port. The CP-717 can be con-
nected to perform MP920 engineering.
This section explains the hardware and software settings that must be made for 217IF trans-
missions (serial transmissions). These settings allow the Machine Controller to operate as a
Master or a Slave conforming to each transmission protocol.
217IF transmissions can send and receive data using MSG-SND and MSG-RCV functions
programmed in drawing or function programs.
DSUB－25 RS-232C
DSUB－9 RS-232C
MR－8 RS-232C
CN1
CN2
CN3
S
yst
em Bus
Co
nnect
o
r
Shared
Memory
Sys
tem Bus
Interface
Transmis-
sion Proces-
sor 1
Transmis-
sion Proces-
sor 2
Transmis-
sion Proces-
sor 3