Omron E5AN - Compoway;F Communications Procedures

2-1
SECTION 2
CompoWay/F Communica-
tions Procedures
Read this section if you are to communicate using the CompoWay/F format.
2.1 Data Format..................................................................2-2
Command Frame...................................................2-2
BCC Calculation Example ........................ 2-3
Response Frame...................................................2-3
Communications Data ........................................... 2-4
End Code Example................................................2-4
2.2 Structure of Command Text .......................................... 2-6
PDU Structure ....................................................... 2-6
Area Definitions ..................................................... 2-6
Type Code (Variable Type) ................................... 2-6
Addresses..............................................................2-7
Number of Elements.............................................. 2-7
List of Services (Main Request Codes and
Sub-Request Codes) .............................................2-7
2.3 Detailed Description of the Services.............................2-9
Read Variable Area ............................................... 2-9
Write Variable Area ............................................. 2-10
Composite Read from Variable Area...................2-12
Composite Write to Variable Area ....................... 2-13
Read Controller Attributes ................................... 2-16
Read Controller Status ........................................ 2-17
Echoback Test..................................................... 2-18
Operation Command ........................................... 2-19
2.4 Response Code List ...................................................2-26