Omron CPM1 Programming Manual

7
PC Setup Section 1-1
Word(s) Bit(s) Function Page
RS-232C Port Settings
The following settings are effective after transfer to the PC.
DM 6645 00 to 07 Port settings
00: Standard (1 start bit, 7-bit data, even parity, 2 stop bits, 9,600 bps)
01: Settings in DM 6646
90
08 to 11 Link words for 1:1 link (Effective when bits 12 to 15 are set to 3.)
0: LR 00 to LR 63; 1: LR 00 to LR 31; 2: LR 00 to LR 15
12 to 15 Communications mode
0: Host link; 1: RS-232C (no protocol); 2: 1:1 data link slave; 3: 1:1 data link master;
4: NT Link (1:1) (NT Link setting is only applicable to the CQM1-CPU4@-EV1 CPU
Units.)
DM 6646 00 to 07 Baud rate
00: 1.2K, 01: 2.4K, 02: 4.8K, 03: 9.6K, 04: 19.2K
08 to 15 Frame format
Start Length Stop Parity
00: 1 bit 7 bits 1 bit Even
01: 1 bit 7 bits 1 bit Odd
02: 1 bit 7 bits 1 bit None
03: 1 bit 7 bits 2 bit Even
04: 1 bit 7 bits 2 bit Odd
05: 1 bit 7 bits 2 bit None
06: 1 bit 8 bits 1 bit Even
07: 1 bit 8 bits 1 bit Odd
08: 1 bit 8 bits 1 bit None
09: 1 bit 8 bits 2 bit Even
10: 1 bit 8 bits 2 bit Odd
11: 1 bit 8 bits 2 bit None
DM 6647 00 to 15 Transmission delay (Host Link)
0000 to 9999 (BCD): Set in units of 10 ms, e.g., setting of 0001 equals 10 ms
DM 6648 00 to 07 Node number (Host link, effective when bits 12 to 15 of DM 6645 are set to 0.)
00 to 31 (BCD)
08 to 11 Start code enable (RS-232C, effective when bits 12 to 15 of DM 6645 are set to 1.)
0: Disable; 1: Set
12 to 15 End code enable (RS-232C, effective when bits 12 to 15 of DM 6645 are set to 1.)
0: Disable (number of bytes received)
1: Set (specified end code)
2: CR, LF
DM 6649 00 to 07 Start code (RS-232C)
00 to FF (binary)
90
08 to 15 When bits 12 to 15 of DM 6648 are set to 0:
Number of bytes received
00: Default setting (256 bytes)
01 to FF: 1 to 255 bytes
When bits 12 to 15 of DM 6648 are set to 1:
End code (RS-232C)
00 to FF (binary)

Omron CPM1 Specifications

General

Model	CPM1
Manufacturer	Omron
Instruction Set	Basic and advanced instructions
Power Supply	100 to 240 VAC or 24 VDC
Communication	RS-232C
I/O Points	10, 20, 30, or 40 points depending on the model
Timers	Yes, multiple timers available
Counters	Yes, multiple counters available
Input Voltage	24V DC
Output Type	Relay or transistor
Number of I/O Points	10, 20, 30, 40
Communication Ports	RS-232C (optional)
Operating Temperature	0°C to 55°C
Storage Temperature	-20°C
Humidity	10% to 90% (non-condensing)
Dimensions	Varies depending on the model
Weight	Varies depending on the model
Program Memory	2048 steps (2K steps)