User's Manual slip printer CBM-820

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ESC u n

[Function] Sends Peripheral Device Status

[Code] ASCII ESC u n

Hexadecimal 1B 75 n

Decimal 27 117 n

[Range] n = 0, 48

[Outline] This command sends the status of the connector pin n every time the command is executed.

The following lists the type of n.

[Caution] The following table describes the status sent.

• If nothing is connected to the connector, the bit 0 will be always "1".

• If DTR/DSR control is selected and the memory switch 4-5 is set to 0, the printer sends only

1 byte after conﬁrming that the host is ready to receive (the DSR signal status is Space).

If the host is not ready (the DSR signal status is Mark), the printer will wait until it will be

ready to receive. If XON/XOFF control is selected or the memory switch 4-5 is set to 1, the

printer will send only 1 byte without conﬁrming the DSR signal status.

• Since this command is executed at deployment of the reception buffer, there may be a delay

between command reception and status sending, depending on the reception buffer

condition.

• If ASB is enabled by GS a, it is necessary to distinguish the status by this command from that

of ASB. See “6. Interface” for how to distinguish them.

• If n goes beyond the range, this command will be ignored.

[See Also] DLE EOT, GS a, 6. Interface, 7. Peripheral Unit Driver Circuit

n Connector Pin

0, 48 Drawer kick connector No. 3 pin

Bit Peripheral Device Hexadecimal Decimal

0 No. 3 pin’s level = L 00 0

No. 3 pin’s level = H 01 1

1 Undeﬁned – –

2 Undeﬁned – –

3 Undeﬁned – –

4 Unused 00 0

5 Undeﬁned – –

6 Undeﬁned – –

7 Unused 00 0