Delta DVP-PLC User Manual

9 Application Instructions API 150-199
DVP-PLC Application Manual
9-9
Registers for received data (responding messages)
Register DATA Explanation
D1070 Low 01 H Address
D1071 Low 10 H Function
D1072 Low 20 H
D1073 Low 00 H
Data Address
D1074 Low 00 H
D1075 Low 02 H
Number of Registers
D1076 Low 4A H CRC CHK Low
D1077 Low 08 H CRC CHK High
Remarks:
1. The activation condition placed before MODRD, RDST and MODRW instructions cannot use rising-edge or
falling-edge contacts; otherwise the data stored in the registers for received data will encounter errors.
2. Flags and special registers for MODRW instruction in RS-485 communication. (For details, see API 80 RS).
Flags Function
M1120
For retaining communication setups. After the setup is made, changes in D1120 will be
invalid.
M1121 When Off, RS-485 is sending data.
M1122 Sending request
M1123 Receiving is completed
M1124 Waiting for receiving data
M1125 Disable receiving status
M1126 Selecting STX/ETX system
M1127 Sending/receiving data through MODRD / RDST / MODRW instructions is completed.
M1128 Sending data…/receiving data…
M1129 Receiving data time-out
M1130 User/system defined STX/ETX
M1131 On when MODRD / MODWR / MODRW is converting data to hex
M1140 MODRD / MODWR / MODRW data receiving error
M1141 MODRD / MODWR / MODRW parameter error
M1142 VFD-A handy instruction data receiving error
M1143
ASCII/RTU mode selection (used with MODRD/MODWR/MODRW) (Off = ASCII mode;
On = RTU mode)
D1070 ~ D1085
When the built-in RS-485 communication instruction is executed and sends out data, the
receiving end will respond with a message and the message will be stored in D1070 ~
D1085. The user can check the registers for the messages.
D1120 RS-485 communication protocol
D1121 PLC communication address (saving PLC communication address; latched)
D1122 Remaining words of the sent data
D1123 Remaining words of the received data
D1124 Start text definition (STX)
D1125 Definition of end text 1 (ETX1)
D1126 Definition of end text 2 (ETX2)
D1129 Abnormal communication time-out. Unit: ms
D1130 Records of error codes sent back from MODBUS
D1256 ~ D1295
When the built-in RS-485 communication instruction MODRW is executed, the sent out
data will be stored in D1256 ~ D1295. The user can check whether the instruction is
correct by the contents in the registers.
D1296 ~ D1311
PLC will automatically convert the ASCII data stored in the register designated by the user
into hex format.

Delta DVP-PLC Specifications

General

Manufacturer	Delta Electronics
Model	DVP-PLC
Category	Controller
Humidity	5% to 95% RH, non-condensing
Programming Language	Ladder Diagram (LD), Instruction List (IL), Sequential Function Chart (SFC)
CPU Type	Various, depending on the specific model within the DVP series (e.g., ES2, EX2, SX2, SA2, EH3, etc.)
Operating Temperature	Typically 0°C to 55°C (32°F to 131°F)
Storage Temperature	Typically -25°C to 70°C (-13°F to 158°F)