M&M RWB series - Protected Typed Logical Write; Word Range Read; Word Range Write

Standard Screw Compressor - RWB Series
C-12
M&M R
EFRIGERATION
I
NC
.
Protected Typed Logical Write
The following elements are required to access the data in the Control Message and
Setpoint Messages using the Protected Typed Logical Write command. Control com-
mands and setpoints may be written individually or in blocks. The master is responsi-
ble for setting the correct element number and byte size for the message block.
Word Range Read
The registers within the Status Message, Control Message, and Setpoint Messages
may be read individually or in blocks. The master is responsible for setting the cor-
rect number of transactions and size for the message block. The Word Range Read
command may only be used with PLC-5 Logical ASCII Addressing.
Word Range Write
The following elements are required to access the data in the Control Message and
Setpoint Messages using the Word Range Write message. Control commands and
setpoints may be written individually or in blocks. The master is responsible for set-
ting the correct number of transactions and size for the message block. The Word
Range Write command may only be used with PLC-5 Logical ASCII Addressing.
Command 0x0F
Function Code 0xAA
Byte Size 0x02 - 0x28
File Number 0x0B-0x0D (N11-N13)
File Type 0x89 (Integer)
Element Number 0x00 - 0x13
Sub-Element Number 0x00
Data Variable
Checksum BCC
Command 0x0F
Function Code 0x01
Packet Offset 0x00
Total Tranactions 0x00 - 0x27
PLC-5 System Address N10-N13 (ASCII Only)
Size 0x02 - 0x50
Checksum BCC
Command 0x0F
Function Code 0x00
Packet Offset 0x00
Total Tranactions 0x01 - 0x13
PLC-5 System Address N11-N13 (ASCII Only)
Size 0x02 - 0x28
Data Variable
Checksum BCC