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16.41 Siemens S7/300 PC ADAPTOR
Siemens PC adapter (Siemens Part# 6ES7-972-0CA22-0XA0) is required.
16.41.1 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
RS-232
Options: RS-232, RS-485 default/2W/4W – Dependant on PLC
hardware
Baud rate
19200
Options: 9600, 19200, 38400, 57600, 115200 - Must match PLC port
setting
Parity
Odd
Options: Odd, Even, None - Must match PLC port setting
Data bits
8
Options: 7, 8 - Must match PLC port setting
Stop bits
1
Options: 1, 2 - Must match PLC port setting
HMI station No.
0
Not used
PLC station No.
2
Options: 0-255 - As per PLC setting
Comm. delay (10msec) 0
Request delay: 0~999 @10 milliseconds. Use when the PLC requires a
delay between requests. Not implemented in simulation mode.
16.41.2 PLC Setting
S300 Station number (Station Number) must be 02 and DB10 must be created.
Communication parameters must be the same as those of the MMI.
Compatible with:
Siemens S7-300 Series: CPU 312, 313, 314, 315, 316, 318 (using an MMI adapter from Siemens)
16.41.3 Wiring
Adapter cable to go from HMI to PC Adapter cable.
DO NOT PLUG THIS CABLE DIRECTLY INTO THE PLC!
16.41.3.1
Wiring for cable connections using
Siemens S7-300
CPU’s
with
PC adapter
RS232 D-Sub 9 Male
Socket ports.
KEP Part#: (Not Available) (D-Sub 9 Male Socket to D-Sub 9 Female Plug Cable)
HMI PLC[RS-232]
Connect to Siemens PC adapter
RS-232 port
2 TD
Æ
3 RD
3 RD
Æ
2 TD
5 GND
Æ
5 GND
7 RTS
Æ
8 CTS
Shield
Æ
Earth Ground
Note:
Graphic representation may not reflect the actual appearance of the finished cable.
16.41.4 Device address
Bit/Word
Type
Address Format
Range
Notes
B
I
ddddo
dddd: 0~4095 o: 0~7 Input Bits, Word portion is decimal, bit portion is octal
B
Q
ddddo
dddd: 0~4095 o: 0~7 Output Bits, Word portion is decimal, bit portion is octal
B
M
ddddo
dddd: 0~4095 o: 0~7 Internal Bits, Word portion is decimal, bit portion is octal
B
DB10~29Bit
ddddo
dddd: 0~8192 o: 0~7 Data Word Bits, Word portion is decimal, bit portion is
octal
W
DB10~60
dddd
dddd: 0~8192
Data Words, Addresses must be even numbers 0,2,4,…
etc.
Note:
Do not write to Data words that do not exist as this may cause PLC malfunction.
Summary of Contents for MMI-1500
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