Siemens Simatic IPC647C Operating Instructions Manual page 152

Detailed descriptions
16.1 Motherboard
Serial interfaces COM1, COM2 (V24), X617, X615
Serial interface
Pin no.
1
2
3
4
5
6
7
8
9
Parallel interface LPT1, X609
Parallel interface
Pinno.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 – 25
152
Short name Meaning
DCD (M5) Receive signal (carrier)
RxD (D2) Receive data
TxD (D1) Send data
DTR (S1) Data terminal ready
GND (E2) Functional ground (reference potential) –
DSR (M1) Ready for operation
RTS (S2) Request to send
CTS (M2) Clear to send
RI (M3) Incoming call
Short name Meaning
/ Strobe (CLK) Data message
Data - Bit 0 Data channel 0
Data - Bit 1 Data channel 1
Data - Bit 2 Data channel 2
Data - Bit 3 Data channel 3
Data - Bit 4 Data channel 4
Data - Bit 5 Data channel 5
Data - Bit 6 Data channel 6
Data - Bit 7 Data channel 7
/ACK Data acknowledge
BUSY Not ready
PE (PAPER END) Paper end
SELECT Device selection
/ AUTO FEED Automatically new line
/ ERROR Device error
/ INIT Reset / Initialization
/ SELECT IN Printer selection
GND Ground
Input / output
Input
Input
Output
Output
Input
Output
Input
Input
Input / output
Output (open collector)
Output (TTL level)
Output (TTL level)
Output (TTL level)
Output (TTL level)
Output (TTL level)
Output (TTL level)
Output (TTL level)
Output (TTL level)
Input (4.7 kΩ pull up)
Input (4.7 kΩ pull up)
Input (4.7 kΩ pull up)
Input (4.7 kΩ pull up)
Output (open collector)
Input (4.7 kΩ pull up)
Output (open collector)
Output (open collector)
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Operating Instructions, 12/2010, A5E02669337-02
SIMATIC IPC647C