iTOOL Project design via modem connection B 70.4090.2 03.2001/00365503 1 What you need Modem 1 Modem 2 The following components are required for setting up a modem connection between a PC and a JUMO mTRON automation system: - IBM-compatible PC with Windows 3.11 or Windows 95 operating system - One modem1 for connection to a PC - The second modem1 is connected to any mTRON module of the JUMO mTRON automation system via the interface cable2 that is available as an accessory. 1. Modems are available through JUMO for rail mounting, or in external version. 2. PC interface Part No. 00353766 1 2 Configuring the modem The modems have to be configured before starting up the modem connection for project design. Nonvolatile memory The modem configurations are stored inside the modem in a non-volatile memory. If one of the modems is switched on, the configuration that was stored will be loaded automatically. Terminal program Both modems are configured via a terminal program for PC. A terminal program is generally included in the modem delivery. As an option, the terminal program within Windows can also be used. Comprehensive information on connection and modem operation from a PC can be found in the Operating Instructions for the modem, as well as in the Windows online help. Marking the modems The two modems have different configurations. To avoid confusion, the modems should be marked on the housing. AT The modem is configured via the usual AT commands commands (AT = attention). After switching on, the modem is in command mode. The modem recognises commands by the character sequence “AT”. All the characters that follow will be interpreted as a command. AT commands can be entered via a terminal program, for example. Example of “ATZ” AT AT = attention commands Z = modem reset 2 2 Configuring the modem Serial interface The serial interface provides the link between the PC and the modem. For configuration and project design, the parameters of the serial interface have to be set in the terminal program as follows: Baud rate Data bits Parity Stop bits 4800 8 No (no parity) 1 3 2 Configuring the modem 2.1 Configuration of the modem on the mTRON side Connection In order to configure the modem, it is necessary to connect it to the PC, as described in the Operating Instructions for the modem. Entering Commands are entered via the terminal program. commands Every individual command is terminated with R and sent to the modem. Commands For the modem on the mTRON side, the following commands must be carried out in the sequence indicated: Command AT&F0 AT&K0 AT&D0 ATS0=1 ATQ1 AT&W0 AT&Y0 ATZ Connection to the mTRON module 4 Description Load factory setting Data flow check switched off DTR evaluation switched off Modem answers after first ring Modem messages off Store current configuration as user profile 0 User profile 0 is loaded after switching on the modem Modem reset After the modem has been configured, it can be connected to any mTRON module of the JUMO mTRON automation system via the PC interface cable that is included in the delivery. 2 Configuring the modem 2.2 Configuration of the modem on the PC side There are two alternatives for configuring the modem on the PC side: a. Configure modem permanently for the JUMO mTRON-iTOOL project design software b. Configure modem for the JUMO mTRON-iTOOL project design software only when required Commands for alternative a. Command AT&F0 AT&K0 AT&D2 ATX3 ATQ0 AT&W0 AT&Y0 ATZ Description Load factory setting Data flow check switched off Modem hangs up on loss of DTR signal Define modem messages Switch on modem messages Store current configuration as user profile 0 After the modem has been switched on, the user profile 0 is loaded Modem reset Connection to a PC After the modem has been configured, it must be connected to the PC from which the project design of the remote JUMO mTRON automation system is to be performed (see Operating Instructions for modem). Alternative b. The configuration of the project design software and setting up a connection via a modem is fully described in Chapter “Modem connection” of the System Manual Part 2 “JUMO mTRON-iTOOL project design software”. 5 3 Connection 6 Interface cable Modem on mTRON side Telephone line PC with JUMO mTRON-iTOOL project design software installed Serial connection to the PC Modem on PC side Any mTRON module In order to carry out project design for a remote JUMO mTRON automation system via a modem connection, the individual components must be connected as shown in the picture below.
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