Using data transmission commands
Three commands transmit data to and from the terminal or logical unit that is the principal facility of your task.
- RECEIVE
- reads data from the terminal.
- SEND
- writes data to the terminal.
- CONVERSE
- writes data to the terminal, waits for input, and reads the input.
CONVERSE is essentially a combination of SEND and RECEIVE and is usually the equivalent of SEND followed by RECEIVE. In certain cases you must use CONVERSE instead of SEND and RECEIVE, for example, sending structured-field data to certain 3270 devices. In other cases you must use SEND and RECEIVE, because CONVERSE is not provided; these are noted in Table 2.
The SEND, RECEIVE, and CONVERSE commands are fully described in CICS command summary . They are broken down by device group, because the options for different devices and access methods vary considerably. Terminal device support tells you which device group to use for your particular device.