analog input template EM235 is how much resistance?
input resistance and the size you choose the type of input, if you choose to input voltage, input impedance such big Zhaoou 10; If you choose to enter the current anti-importation is ohm 250 for
in the application modules EM231RTD when measuring its value on behalf of the meaning of what?
When you EM231RTD application module, measuring its value is 10.0 divided by the actual temperature. Modules can measure the scope itself is -3276.8 to 3276.7 degrees Celsius, the actual measurement depends on the scope of sensor measurements and the actual temperature range.
under what circumstances can edit Chinese TD200?
proposed STEP 7-Micro/WIN 32 V3.1 SP1 Chinese version of
EM235 range of issues:
by adjusting the DIP switches and potentiometers can change the range of EM235 for:
0-10V; 0-5V
0-1V; 0-500mV
0-100mV; 0-50mV
± 10V; ± 5V; ± 2.5V
± 1V ± 500mV; ± 250Mv
± 100mV; ± 50mV; ± 250mV
0 - 20mA
under what circumstances can edit Chinese TD200?
proposed STEP 7-Micro/WIN 32 V3.1 SPI Chinese version of
what AC / DC / RLY?
This is the S7-200CPU models
AC / DC / RLY counterparts: the exchange of 220 power supply, 24V DC input, output relay
In addition, it is a type: DC / DC / DC
DC / DC / DC counterparts: 24V DC power supply , 24V DC input, output transistor
DI need to supply it?
amount of input switching power supply needs, S7-200 has a corresponding 24V power supply to provide specific requests in connection "Technical specifications" to find
Why do some programming software under the command did not Ln?
for two reasons: First, the software version of the programming problem, proposed a new version of software, and the other is only CPU224, 226 in support of this directive, CPU221, CPU222 no such instructions.
if I programmed the address, baud rate, the parameters have forgotten how to do?
Siemens to provide a wipeout.exe application, you can resume the original settings for the PLC, and delete user procedures, the data block, and all the configuration information, PLC will be set to address 2, 9600 baud rate. WIPEOUT in the DOS environment to run, but you must follow the prompts to complete. If you repeat an unsuccessful test, which is the basic principle of this, PLC in which the initial power-up (very short) set up the factory is the work of the state, WIPEOUT only have control over this period of time to change the settings of the PLC. So you power-operated keyboard and should tie in with the good. Wipeout.exe copies of the documents of programming software on CD-ROM, if you do not have a welcome to download
the possibility of the use of CPU224 stored in the memory card on the CPU222 procedures
A: Yes, you can EEPROM memory card to the same, more or updated CPU22X enter procedures.
why the use of the analog input module, sometimes AD code values have a lot of "beating"?
the application analog module, you will have two "power", is a CPU's power supply, the other is the sensor signals to the two power supply is not connected to the ground. This makes it possible to have high common-mode voltage, analog input values have an impact.
: proposed that the power ground wire to connect the two together,
attention: a certain time to ensure that only a total of two power ground in order to avoid unnecessary adverse current Have
in the use of MODEM, can not connect
MODEM communication between the CPU and the failure of the following reasons may have
1. CPU and the PC / PPI cable is designed for half-duplex, and the computer 232 is a full-duplex
2. CPU does not have a DTS signal does not have a signal RTR, but the computer can generate
solution:
1. In the pre-MODEM permanently disconnect the local echo (for example, with AT command AT EO)
2. In the right place off and DTS signal RTR on the "MODEM" and S7-200 issues related to the topic we will discuss
when the PLC input PLC used its own 24V power supply should pay attention to what?
if your I / O through the PLC's own 24V power supply, just in the PLC power when there is not an immediate power, CPU must come ahead of the input power. This is a time when power-on initialization may have an impact, the solution is if the initialization procedure with the switch input, please re-initialization delay a few milliseconds.
at a time when the use of information TD200 why over time will automatically switch to the other information?
in the configuration of the TD200, information is given priority in descending order, the first information of the highest priority, so that To a number of information, through up and down arrow keys to be able to switch between a number of information, black blinking cursor shows the current information within 30 seconds if no operation, the system will automatically switch to the highest priority of the information that . This is a very good function, not a mistake. If you would like to be a regular show, at the same time as long as you only "can" be a message.
on the RCV and XMT command when the use of the frequently asked questions:
1. RCV and XMT instructions at the same time can not be effective if the error will be simultaneous, communications, I can not carry out new communications, the need to restart before they can clear the error.
2. Used in the PC / PPI cable, between the sending and receiving a certain time interval, which is by its own cable switching time of the decision.
3. Communication on the issue of overtime, in a set SM187.2, SMW192 not exceed the value of the time that the termination of the receipt, but only after receiving the first character can not be completed in time to receive before they can receive automatic termination, If they can not get the first byte, RCV will remain valid.
point solution:
If you want to stop RCV, the corresponding need to reset The SM187.7, but the implementation of RCV can be an effective, because only a new CPU instruction RCV only read SMB
such as:
LD M0.2
RSM87.7, 1
RCV VB99, 0
XMT VB199, 0
sent off before the first to receive
2001 years later, set TP170A, do not download it?
This is because in 2001 after the purchase of a new version of TP170A add new features and Firmware, the original protool / pro V5.2 SP1 can not support this new feature, it should be protool/proV5.2 SP1 to upgrade protool/proV5 .2 SP2 that is good.
old TP170A procedure can not be downloaded. How do?
for the MP270, OP170B, TP170A, TP170B such as a new play based on the WindowsCE operating system operator panel, as Protool / pro version of the software escalated, so that the old TP / OP with the new Firmware can not protool / pro match. So download the software program can not go on, this should be the following steps on the old TP / OP of the Firmware upgrade:
1. In the new version of Protool / pro CD-ROM, in the images \ TP170A \ V5-2-SP2 find Ptupdate.exe documents, running the file, it will pop a "net-ptupdate" window. In the menu "file"? "Setting" a good set of communication interfaces, such as coml.
2. In the menu "file"? "Open" window select CD-ROM brought in the "TP170A_V5_2_SP2_23.img" documents, and open the file.
3. In the menu "file"? "Download" in this configuration to be downloaded in TP170A.
4. Restart TP170A, and then download procedure.
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