252
16.25 Memory Map Protocol
Memory Map protocol is similar to IBM 3764R communication protocol. The HMI reserves 512 words of Data memory for use
with this protocol. The Host must update the values in these words. The HMI uses the words to display data and control
parts status on its screen. When touch actions are taken, data is sent to the Host and the Host must then update the memory
in the MMI. The Host is always responsible for updating the HMI memory.
Select one of the following from the Driver list in the System Parameters settings:
MemoryMap_Master
: The HMI commands take precedence whenever there is a “collision” on the communications lines.
The Host must wait for all clear and then send commands.
MemoryMap_Slave
: The Host commands take precedence whenever there is a “collision” on the communications lines. The
HMI must wait for all clear and then send commands.
16.25.1 HMI Setting
Communication parameters must be set the same as those of the PLC. The following settings are recommended.
Parameter
Recommended Setting Notes
Serial I/F port
RS232
Options: RS232, RS485/2W/4W.
Note:
RS485 Default is RS485 4W
Baud rate
9600
Options: 9600, 19200, 38400, 57600, 115200 - Must match PLC port
setting. As per Host setting
Note:
RS485 2W is limited to 9600, 19200
Parity
Even
Options: Odd, Even, None - As per Host setting
Data bits
8
Options: 7, 8 - As per Host setting
Stop bits
1
Options: 1, 2 - As per Host setting
HMI station No.
0
Not used
PLC station No.
0
Not used
Comm. delay (10msec) 0
Request delay: 0~999 @10 milliseconds. Use when the PLC requires a
delay between requests. Not implemented in simulation mode.
16.25.2 Wiring
16.25.2.1
Wiring for HMI between
RS232
D-Sub 9 Female Plug ports.
KEP Part#: (Not Available) (D-Sub 9 Male Socket to D-Sub 9 Male Socket Cable)
HMI PLC[RS-232]
Connect to HMI PLC[RS-232]
2 TXD
Æ
3 RXD
3 RXD
Æ
2 TXD
5 GND
Æ
5 GND
Shield
Æ
Earth Ground
Summary of Contents for MMI-1500
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