Guardian Procedure Calls Reference Manual (G06.25+)

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1441

Guardian Procedure Calls (S)

Guardian Procedure Calls Reference Manual—522629-013

14-99

SETMODE Procedure

165 SNAX:Exception response (ER) mode

param1 = 0 disables ER mode. The LU sends outbound LU-LU

FMD requests in definite response (DR) mode. This is

the default value if SCF or SPI has not been used

previously to configure ER mode; otherwise, the SCF or

SPI configuration value is used.

= 1 enables ER mode for applications existing prior to the

introduction of ER mode. The LU sends outbound LU-

LU FMD requests in ER mode. However, error 122 is

sent on a negative response instead of error 951.

= 2 enables ER mode for applications using the ER mode

features. The LU sends outbound LU-LU FMD requests

in ER mode. Error 951 is sent on a negative response.

param2 is not used with function 165.

last-params[0] contains the previous value of param1.

last-params[1] contains the number of outbound requests required per

device before an ER mode sync point is automatically

generated on behalf of the user.

ER mode is supported only by the SNAX/XF product. Specifying this

function for SNALU causes an error 2 (invalid operation) to be returned.

Passing a value other than one of those listed above causes an error 590

(invalid parameter value) to be returned. A SETMODE 165 call applies only

to the opener, not to the device that is opened; another SETMODE 165 call

must be made if the file is closed.

For more information about ER mode, see the

SNAX/XF Application

Programming Manual.

258 Telserv: Transfers data in either half duplex mode or full duplex mode.

param1 .<15> = 0 Normal half duplex mode (default).

.<15> = 1 Full duplex mode.

param2 is not used with function 258.

In the full duplex mode,write requests are not queued behind read requests;

they are processed immediately. Writeread requests are allowed only if there

are no pending requests; otherwise, error 160 is returned.

Cause. For more information, see the Telserv Guide.

Table 14-4. SETMODE Functions (page 32 of 34)

function Parameters and Effect