C500BC031 Omron, C500BC031 Datasheet - Page 78
C500BC031
Manufacturer Part Number
C500BC031
Description
BACKPLANE
Manufacturer
Omron
Datasheet
1.C500BC031.pdf
(168 pages)
Specifications of C500BC031
Leaded Process Compatible
No
Peak Reflow Compatible (260 C)
No
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Communications Protocol
3-2
3-2-1
62
Level 3
RI
MI
QQ
Header
Header
Code
Code
I/O TABLE READ
I/O TABLE GENERATE
COMPOUND COMMAND
Communications Protocol
@
Block Format
Unit no. 00 to 31
X10
X
1
X10
X
0
X
Name
Name
Header
FCS calculation range
The host computer has initial transmission priority. Data transfer between the
host computer and the Host Link System is, therefore, initiated when the com-
puter sends a command to a PC in the Host Link System.
A set of data in a transmission is called a block. The data block sent from the host
computer to the Host Link System is called a command block. The block sent
from the Host Link System to the computer is called a response block. In a multi-
ple-link communications system, each block starts with a unit number and a
header, and ends with a Frame Checksum (FCS) code and a terminator (: and
CR). In a single-link system, however, each block starts with only a header, and
ends with only a terminator. The terminator in the command block enables the
PC to send a response. The terminator in the response block enables the host
computer to send another command. Examples of communications are in-
cluded at the end of Section 4 Commands and Responses.
A block is usually made up of one unit called a frame, but long blocks of data
(over 131 characters) must be divided into more than one frame before trans-
mission. In a multiple-link system, the first frame can have up to 131 characters,
and subsequent frames can have up to 128 characters. In a single-link system,
however, every frame (the first included) has up to 128 characters. The data
must then be divided into more than one frame when there is a block consisting
of more than 131 characters in a multiple-link system, and of more than 128
characters in a single-link system. In this case, the beginning and intermediate
blocks end with a delimiter (CR), instead of a terminator (:CR).
X
Text
Valid
Not valid
Valid
RUN
RUN
PC Mode
PC Mode
Valid
Not valid
Valid
MNTR
MNTR
X
FCS
Valid
Valid
Valid
PROG
PROG
X
*
Terminator
All: C120, C200H/HS/
HX/HG/HE, C500,
C1000H, C2000H
All: C120, C200H/HS/
HX/HG/HE, C500,
C1000H, C2000H
All: C120, C200H/HS/
HX/HG/HE, C500,
C1000H, C2000H
Applicable
Applicable
Section 3-2
CR
PCs
PCs
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