
Chapter 3
MMS and Your Coprocessor
3-12
The following table provides sample mappings of block transfer read data
types.
Address:
MMS Data Type:
BT9:0
STRUCTURE of type BLOCK TRANSFER
BT9:0,10
ARRAY of 10 BLOCK TRANSFER STRUCTURES
BT9:0.RW
BOOLEAN (applies to all other BOOLEAN members)
BT9:0.RW,5
ARRAY of 5 BOOLEANS (applies to all other BOOLEAN members)
BT9:0.RLEN
INTEGER (applies to all other INTEGER members)
BT9:0.RLEN,5
ARRAY of 5 INTEGERS (applies to DLEN, FILE, ELEM, and RGS.)
See the section titled Additional Information on Using Data Types, later in
this chapter, and Appendix A of this manual for more information on
mapping MMS data types onto PLC–5 data files.
Control (R) Mappings
The following is the format of a control structure as viewed by MMS:
BOOLEAN
FD
BOOLEAN IN
BOOLEAN
UL
BOOLEAN
ER
BOOLEAN
EM
BOOLEAN
DN
BOOLEAN
DU
BOOLEAN
EN
INTEGER
LEN (16 bits)
INTEGER
POS (16 bits)
Important: Refer to your PLC–5 Programming Reference Manual for
descriptions of the individual fields in data type structures.
The following table provides samples of mapping control data types.
Address:
MMS Data Type:
R6:0
STRUCTURE of type CONTROL
R6:2,4
ARRAY of four CONTROL STRUCTURES
R6:1.FD
BOOLEAN (applies to all other BOOLEAN members)
R6:1.FD,6
ARRAY of 6 BOOLEANS (applies to all other BOOLEAN
members)
R6:1.LEN
INTEGER
R6:1.POS
INTEGER
R6:1.POS,5
ARRAY of 5 INTEGERS (applies to all other INTEGER members)
Содержание PLC-5 MAP/OSI
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