Allen-Bradley SLC 500 Series User Manual

Publication 1747-RM001G-EN-P - November 2008
12-6 SLC Communication Instructions
Figure 12.1 SLC 5/02 Messaging Example with MSG Timeout
U
N9:0
8
MSG_TO_BIT
0003
END
0002
N9:0
13
MSG_DN_BIT
N9:0
12
MSG_ER_BIT
U
B3:0
0
MSG_TRIGGER
N9:0
8
MSG_TO_BIT
0001
N9:0
14
MSG_ST_BIT
EN
DN
Timer On Delay
Timer T4:0
Time Base 1.0
Preset 5<
Accum 0<
TON
MSG_TIMEOUT
T4:0
DN
MSG_TIMEOUT/DN
L
N9:0
8
MSG_TO_BIT
0000
B3:0
0
MSG_TRIGGER
EN
DN
ER
Read/Write Message
Read/Write Read
Target Device 500CPU
Control Block N9:0
Control Block Length 7
Setup Screen
MSG
SLC_502_MSG

Allen-Bradley SLC 500 Series Specifications

General

Programming Software	RSLogix 500
Series	SLC 500
Category	Controller
Manufacturer	Allen-Bradley (Rockwell Automation)
I/O Capacity	Up to 4096 I/O points
Communication Ports	DH-485
Programming Languages	Ladder Logic
Operating Temperature	0 to 60 °C (32 to 140 °F)
Relative Humidity	5% to 95% (non-condensing)
Memory	4K to 64K words (depending on the processor)
Power Supply	AC or DC (depending on the module)