Match iSeries system parameters for a 3274 controller

You match the iSeries™ configuration parameters with the configuration questions and sequence numbers to configure the 3274 controller. These parameters are described in the following table.

For more information about configuring the 3274 controller, see the 3274 Control Unit Planning, Setup, and Customizing Guide.

To configure the iSeries server to a 3274 controller:

iSeries Prompt iSeries Parameter 3274 Sequence Number Notes
Connection number CNNNBR 411 3274 DTE Address

For X.25 SVCs, the connection number specified on the CRTCTLRWS command and in sequence number 411 must match.
Exchange identifier EXCHID 215 Physical Unit Identification

For switched connections, the 5-digit hexadecimal value specified for sequence number 215 must match the last 5 digits of the exchange identifier specified on the CRTCTLRWS command.
X.25 link protocol LINKPCL 403 Logical Link Control

For X.25 connections, values specified must match. Specify LINKPCL(*QLLC) on the CRTCTLRWS command; specify 1 (QLLC) for sequence number 403.
Link type LINKTYPE 331 BSC/SDLC/X.25 Protocol

Values specified on the CRTCTLRWS command and in sequence number 331 must match as follows:

  • If LINKTYPE(*SDLC), 331 = 1
  • If LINKTYPE(*X25), 331 = 2
Local network address NETADR 410 Host DTE Address (HNAD)

For X.25 SVCs, the network address specified on the CRTLINX25 command and in sequence number 410 must match.
Modem data rate select MODEMRATE 318 Full- or Half-Speed Transmission

The values specified for the MODEMRATE parameter on the CRTLINSDLC and CRTLINX25 commands must match sequence number 318 as follows:

  • If MODEMRATE(*FULL), 318 = 0
  • If MODEMRATE(*HALF), 318 = 1
NRZI data encoding NRZI 313 NRZ or NRZI Encoding

For SDLC lines only, the values specified must match as follows:

  • If NRZI(*NO), 313 = 0
  • If NRZI(*YES), 313 = 1
Short-hold mode SHM 362 X.21 Switched Options

If SHM(*YES) is specified on the CRTCTLRWS command, digit 7 or 8 of question 362 must be set to 1. (For example, xxxxxx10 indicates that the DCE is supported for direct calls.)
Station address STNADR 302 Control Unit Address

Value specified for item 302 must match that specified on the CRTCTLRWS command.