Srm1(-V2) Flash Memory - Omron CPM1 Programming Manual

5-3-4 TR Area
5-3-5 HR Area
5-3-6 AR Area
5-3-7 LR Area
5-3-8 Timer/Counter Area
5-3-9 DM Area
Error Log
PC Setup
5-4

SRM1(-V2) Flash Memory

Writing Data
When a complex ladder diagram cannot be programmed in mnemonic code just
as it is, these bits are used to temporarily store ON/OFF execution conditions at
program branches. They are used only for mnemonic code. When programming
directly with ladder diagrams using the SYSMAC Support Software (SSS) or the
SYSMAC-CPT Support Software, TR bits are automatically processed for you.
The same TR bits cannot be used more than once within the same instruction
block, but can be used again in different instruction blocks. The ON/OFF status
of TR bits cannot be monitored from a Programming Device.
Examples showing the use of TR bits in programming are provided on page 272.
These bits retain their ON/OFF status even after the SRM1 power supply has
been turned off or when operation begins or stops. They are used in the same
way as work bits.
These bits mainly serve as flags related to SRM1 operation. These bits retain
their status even after the SRM1 power supply has been turned off or when op-
eration begins or stops. For details on the various bit functions, refer to relevant
sections in this manual or to Appendix C Memory Areas .
When the SRM1 is linked 1:1 with another SRM1, a CQM1, an CPM1/CPM1A or
a C200HS PC, these bits are used to share data. For details, refer to page 171.
LR bits can be used as work bits when not used for 1:1 PC Links.
This area is used to manage timers and counters created with TIM, TIMH(15),
CNT, and CNTR(12). The same numbers are used for both timers and counters
and each number can be used only once in the user program. Do not use the
same TC number twice even for different instructions.
TC numbers are used to create timers and counters, as well as to access
Completion Flags and present values (PVs). If a TC number is designated for
word data, it will access the present value (PV); if it is used for bit data, it will ac-
cess the Completion Flag for the timer/counter.
Refer to instructions beginning on page 310 for details on timers and counters.
DM area data is accessed in word units only. The contents of the DM area are
retained even after the SRM1 power supply has been turned off or when opera-
tion begins or stops.
DM words DM 0000 through DM 1999 can be used freely in the program; other
DM words are allocated specific functions, described below.
DM 2000 through DM 2021 contain the error log information. Refer to Section 9
Troubleshooting for details on the error log.
DM 6600 through DM 6655 contain the PC Setup. Refer to 1-1 PC Setup for de-
tails.
The following settings must be made to use the flash memory area for
SRM1(-V2) PCs.
In order to write the contents of the UM area, the DM read-only area (DM 6144 to
DM 6599, and the PC Setup area (DM 6600 to DM 6655) to the flash memory,
either one of the following operations must be performed.
Section 5-4