M42 P11 S1 does not appear to turn on the relay

[Traffic Producer]

Asking for advice
Switching a relay on or off via G-Gode on a:-
 Creality Ender 5 Plus 
 Marlin-2.1.2 
 Bigtree Tech Octopus V1.1 STM32F446ZET6 chip
 Compile as ABM Panel : Environment STM32F446ZE_btt(512K)   Architecture : stm32f4      Re: STM32F446ZET6 chip

DIRECT_PIN_CONTROL   in Config_adv.h
//  #define Z2_DIAG_PIN                         PG11  // Z2-STOP  in pins_BTT_OCTOPUS_V1_common.h Commented out so that it doesn't conflict with M42 P11 S1 call

OctoPrint Terminal commands tried:-

M42 P11 S1
  
M42 M1 P11 S1

Relay used
5V Relay Module 2 Channel Arduino Raspberry Pi ESP8266 ESP32 Optocoupler ( only one channel used)
5 Volts from Bigtree Tech Octopus V1.1
Signal pin used PG11 pin on Bigtree Tech Octopus V1.1
 

M42 P11 S1 does not appear to turn on the relay

Edited July 28, 2023 by Traffic Producer
Actual pin on board

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