IAI RCON-LC, Instruction Manual

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Chapter 4 PLC Features
4.1 Device Memory
4-8
ME0416-1A
4.1.11 OM_C [For Counter]
OM_C is a count measuring memory and there are 64 points of counter available in total from C0
toC63. Counter setting can be established in the range from 1 to 32767.
Contact status can be confirmed in CS, coil status in CC, current value in CV and setting value in
CP.
4.1.12 OM_L [For Indication of Destination to Jump for JE, JMP, CALL Commands]
It is the memories used to indicate the destination to jump in JE, JMP and CALL Commands. They
do not have data. If L255 is indicated, it jumps to END Command. (L255 is not available in CALL
Command.)
L0 indicates the initialization-dedicated routine, and if it is described in a ladder program, the first
one scan executes only the routine indicated in L0.
4.1.13 OM Modbus Address
RCON-LC permits access to OM using Modbus.
The ranges of the register address and the coil address for each OM are as shown below. For the
details of each address, refer to the address table for RCON-LC_Modbus.
OM_ Modbus Address
OM Name
Register Address Range
(Hexadecimal)
Coil Address Range
(Hexadecimal)
Read/Write Type
X 1020 to 102F 1000 to 10FF R
Y 1040 to 104F 1200 to 12FF R/W
M 1100 to 11BF 1E00 to 29FF R/W
LM 1200 to 120F 2E00 to 2EFF R/W
AM 1600 to 16FF 4F00 to 5EFF R/W
SM 1300 to 1307 3E00 to 3E7F R
TS 1310 to 1313 3F00 to 3F3F R
TC 1350 to 1353 4300 to 433F R
CS 1390 to 1393 4700 to 473F R
CC 13D0 to 13D3 4B00 to 4B3F R
IX 1000 to 1001 R
D 1410 to 148F R/W
SD 1490 to 14CF R
TV 14D0 to 150F R
TP 1510 to 154F R
CV 1550 to 158F R
CP 1590 to 15CF R
For bit memories, coil addresses are set so access can be made bit by bit. Y, M, LM, AM and D
are capable for writing. Other OM are capable only for reading. As L does not have a value, Modes
address assignment is not capable.