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18 COMMUNICATING USING 1E FRAMES
18.4 Read and Write Device Memory
■Data communication in binary code
• Device number: Send 4-byte numerical values from the lower byte (L: bits 0 to 7).
• Device code: Send 2-byte numerical values from lower byte (L: bits 0 to 7).
Data register (D) 1234 (device number is decimal)
Convert a device number to hexadecimal. '1234' (decimal)'4D2' (hexadecimal)
For the values of each device code, refer to the following section.
: Space
Access the devices within the range that can be used in the access target CPU.
For the accessible device range, refer to the following section.
Page 399 Accessible device range
• For word unit specification, the head device number of bit device must be specified in multiple of 16.
• For special relay M9000 or later, (9000 + multiple of 16) can be specified.
ASCII code Binary code
Device name Symbol Type Representation Device code
Input X Bit Hexadecimal X 5820H
Output Y Bit Hexadecimal Y 5920H
Internal relay (include in latch relay and step relay) M/L/S Bit Decimal M 4D20H
Annunciator F Bit Decimal F 4620H
Link relay B Bit Hexadecimal B 4220H
Timer Current value T Word Decimal TN 544EH
Contact Bit Decimal TS 5453H
Coil Bit Decimal TC 5443H
Counter Current value C Word Decimal CN 434EH
Contact Bit Decimal CS 4353H
Coil Bit Decimal CC 4343H
Data register D Word Decimal D 4420H
Link register W Word Hexadecimal W 5720H
File register R Word Decimal R 5220H
442
34
H
34
H
32
H
0
30
H
000
30
H
30
H
30
H
0
30
H
04D
30
H
34
H
44
H
2
32
H
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